Drainage Calculations 8-31-06
@
SUB 1 TO DITCH
e
SUB 8 OFF-SITE
~<1
e
&
MITIGATION AREA #1
NORTH POND
<38 )
NE OFF-SITE
~UbcaJ IRe~H ~ ~
@
CENTER OF SITE
<3
SE OFF-OSITE
CITY OF CHANHASS~N
RECEIVED
SEP 0 1 2.006
CHANHASSEN PLANNING DEPT
(i)
~&
SE SUB
SEtND
~A
<6S)
SW SUB
SW POND
Drainage Diagram for PROPOSED 9-01-06
Prepared by James R. Hill, Inc. 8/31/2006
HydroCAOO 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 2 year Rainfal/=2.70"
Page 2
8/31/2006
Time span=0.00-100.00 hrs, dt=0.01 hrs, 10001 points
Runoff by SCS TR-20 method, UH=SCS
Reach routing by Sim-Route method - Pond routing by Sim-Route method
Subcatchment 1S: SUB 1 TO DITCH Runoff Area=12.980 ac Runoff Depth=0.55"
Flow Length=160' Tc=23.3 min CN=70 Runoff=5.94 cfs 0.599 af
Subcatchment 2S: CENTER OF SITE Runoff Area=23.970 ac Runoff Depth=0.68"
Flow Length=1 ,005' Tc=11.2 min CN=73 Runoff=22.34 cfs 1.356 af
Subcatchment 3S: NE OFF-SITE Runoff Area=2.020 ac Runoff Depth=0.68"
Flow Length=70' Tc=8.6 min CN=73 Runoff=2.11 cfs 0.114 af
Subcatchment 5S: SE OFF-OSITE Runoff Area=5.690 ac Runoff Depth=0.26"
Flow Length=300' Tc=37.4 min CN=61 Runoff=0.53 cfs 0.123 af
Subcatchment 6S: SW SUB Runoff Area=5.030 ac Runoff Depth=O.77"
Flow Length=745' Tc=9.1 min CN=75 Runoff=5.96 cfs 0.323 af
Subcatchment 7S: SE SUB Runoff Area=7.01 0 ac Runoff Depth=0.64"
Flow Length=560' Tc=11.0 min CN=72 Runoff=6.07 cfs 0.371 af
Subcatchment 8S: SUB 8 OFF-SITE Runoff Area=0.940 ac Runoff Depth=0.26"
Flow Length=85' Tc=14.6 min CN=61 Runoff=0.16 cfs 0.020 af
Subcatchment 9S: SUB MIT AREA Runoff Area=1.740 ac Runoff Depth=O.72"
Flow Length=230' Tc=2.0 min CN=74 Runoff=2.58 cfs 0.105 af
Pond 2P: NORTH POND Peak Elev=867.24' Storage=3.368 af Inflow=22.34 cfs 1.356 af
Outflow=2.07 cfs 1.338 af
Pond 6P: SW POND Peak Elev=917.95' Storage=1.606 af Inflow=6.04 cfs 0.689 af
Outflow=0.90 cfs 0.682 af
Pond 7P: SE POND Peak Elev=921.87' Storage=1.507 af Inflow=6.07 cfs 0.371 af
Outflow=O.63 cfs 0.366 af
Pond 9P: MITIGATION AREA #1 Peak Elev=865.12' Storage=0.587 af Inflow=2.58 cfs 0.105 af
Outflow=0.06 cfs 0.101 af
Total Runoff Area = 59.380 ac Runoff Volume = 3.012 af Average Runoff Depth = 0.61"
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAO@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 2 year Rainfal/=2.70"
Page 3
8/31/2006
subcatchment 15: SUB 1 TO DITCH
Runoff
0.599 af, Depth= 0.55"
=
5.94 cfs @ 12.20 hrs, Volume=
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 2 year Rainfall=2.70"
Area (ac)
1.600
5.170
0.980
5.230
12.980
CN Description
61 Pasture/grassland/range, Good, HSG B
85 Wetland
55 Woods, Good, HSG B
61 > 75% Grass cover, Good, HSG B
70 Weighted Average
Tc Length Slope Velocity Capacity Description
(min) (feet) (ftIft) (ftIsec) (cfs)
23.3 160 0.0185 0.1 Sheet Flow,
Grass: Dense n= 0.240 P2= 2.70"
subcatchment 15: SUB 1 TO DITCH
Hydrograph
6-
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u '~Rain'fall=2~ 70"-
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: Runoff Area~12~980 ac
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Runoff Vblume':O~599 af ... .
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... ; R~ ~Qff R~pJ~9~~~''. ..
Flow Length=,160'
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90
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35
,.
65 70
,.
75
, .
10
,
40 45 50 55
Time (hours)
5
80
85
20
30
1- Runoffl
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 2 year Rainfal/=2.70"
Page 4
8/31/2006
Subcatchment 2S: CENTER OF SITE
Runoff
1.356 af, Depth= 0.68"
=
22.34 cfs @ 12.04 hrs, Volume=
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 2 year Rainfall=2.70"
Area (ac)
3.210
2.180
1.200
0.320
0.690
16.370
23.970
CN Description
98 Rooftops
98 Roadway
98 Driveway
98 Sidewalk
98 Open water
61 > 75% Grass cover, Good, HSG B
73 Weighted Average
Tc
(min)
1.0
6.7
Length
(feet)
Slope Velocity Capacity Description
(ftIft) (ftIsec) (cfs)
Direct Entry, Roof to yard
125 0.2600 0.3 Sheet Flow,
Grass: Dense n= 0.240 P2= 2.70"
125 0.0200 2.1 Shallow Concentrated Flow,
Grassed Waterway Kv= 15.0 fps
755 5.0 Direct Entry, Pipe flow @5fps
1,005 Total
1.0
2.5
11.2
Subcatchment 2S: CENTER OF SITE
Hydrograph
25.
24
23
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=~:=.~ =::: -~:::.= c ::::::::~;..:: .::: :.~='RunoffVoluiile1.3S6 :a[~.
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10
~ .. - I .
15 20
25
'.
30
i' .
35
I < -I" ..
65 70 75
45 50 55
Time (hours)
60
95 100
40
1- RUnOffl
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type" 24-hr 2 year Rainfal/=2.70"
Page 5
8/31/2006
Runoff
Subcatchment 3S: NE OFF-SITE
=
2.11 cfs @ 12.01 hrs, Volume=
0.114 af, Depth= 0.68"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 2 year Rainfall=2.70"
Area (ac)
0.110
0.390
0.040
0.090
1.390
2.020
Tc
(min)
1.0
7.6
CN Description
98 Rooftop
98 Roadway
98 Driveway
98 Sidewalk
61 > 75% Grass cover, Good, HSG B
73 Weighted Average
Length
(feet)
Slope Velocity Capacity Description
(fUft) (fUsee) (cfs)
8.6
2 .
lil
~
;:
o
u:
o
o 5
70 0.0586
Direct Entry, Roof to yard
Sheet Flow,
Grass: Dense n= 0.240 P2= 2.70"
0.2
70 Total
Subcatchment 3S: NE OFF-SITE
Hydrograph
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m Type II :2~~h~2year
Rain'fall=2.70"
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Runoff Area=2l020 ac
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Runoff Volume=Q.114 af
: Runoff Depth=O.68"
: : I . : : :
m ...:- -Flow -Leiigll1=70' ...
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: Tc=8.6:min
: :CN=73
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'I '1'" I ,., '\ j"
45 50 55 60 65 70 75 80 85 90 95 100
Time (hours)
.,
10 15 20 25
1- Runoffl
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAO@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 2 year Rainfal/=2.70"
Page 6
8/31/2006
5ubcatchment 55: 5E OFF-05IlE
Runoff
0.53 cfs @ 12.51 hrs, Volume=
0.123 af, Depth= 0.26"
=
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 2 year Rainfall=2.70"
Area (ac)
0.150
0.680
4.860
5.690
CN Description
98 Rooftops
55 Woods, Good, HSG B
61 > 75% Grass cover, Good, HSG B
61 Weighted Average
Tc Length Slope Velocity Capacity Description
(min) (feet) (fUft) (fUsee) (cfs)
37.4 300 0.0200 0.1 Sheet Flow,
Grass: Dense n= 0.240 P2= 2.70"
5ubcatchment 55: 5E OFF-05IlE
Hydrograph
0.55
0.5
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r I" I ' , i I .
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:CN=61
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5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
Time (hours)
1- Runoffi
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 2 year Rainfal/=2.70"
Page 7
8/31/2006
Subcatchment 6S: SW SUB
Runoff
5.96 cfs @ 12.02 hrs, Volume=
0.323 af, Depth= 0.77"
=
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 2 year Rainfall=2.70"
Area (ac)
0.110
1.100
0.092
0.250
0.370
3.108
5.030
CN Description
98 Rooftop
98 Roadway
98 Driveway
98 Sidewalk
98 Open water
61 > 75% Grass cover, Good, HSG B
75 Weighted Average
Tc
(min)
1.0
5.7
Slope Velocity Capacity Description
(ftlft) (ftlsec) (cfs)
Length
(feet)
40 0.0400
0.1
Direct Entry, Roof to yard
Sheet Flow,
Grass: Dense n= 0.240 P2= 2.70"
Direct Entry, Pipe flow @? 5 fps
2.4
9.1
705
745 Total
5.0
Subcatchment 6S: SW SUB
Hydrograph
6-
m . I__
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Type II: 24i-hr 2 year
-.. ..... ... .... ...... mRainfaU=2~70"."
I
Runoff Area, 5~030 ac
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Runoff Vollime'~n~323 af
...: R~ ~C?f.f_ R~PJ-~~~~ ??~I. ....
Flow Length=,74S'
. . I ,. .
.. ... ... .. m ... m ... ... .. .. ... - ... ... : ... Tc:::9.1'm in ...
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: :CN=75
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90 95
L. n. _. ....1... ... n. ..i
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.,
10
,
15
j" I'
20 25
,., '1
35 40
I' '1'
45 50 55
Time (hours)
. ,
65
,.
70
5
75
80
85
30
60
1- RUnOffl
.. 'I
100
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 2 year Rainfal/=2.70"
Page 8
8/31/2006
Subcatchment 7S: SE SUB
Runoff
6.07 cfs @ 12.04 hrs, Volume=
0.371 af, Depth= 0.64"
=
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 2 year Rainfall=2.70"
Area (ac)
0.690
0.710
0.280
0.100
0.360
4.870
7.010
CN Description
98 Rooftop
98 Roadway
98 Driveway
98 Sidewalk
98 Open water
61 > 75% Grass cover, Good, HSG B
72 Weighted Average
Tc Length Slope Velocity Capacity Description
(min) (feet) (ftlft) (ftlsec) (cfs)
8.5 55 0.0270 0.1 Sheet Flow,
Grass: Dense n= 0.240 P2= 2.70"
1.3 160 0.0200 2.1 Shallow Concentrated Flow,
Grassed Waterway Kv= 15.0 fps
1.1 345 5.0 Direct Entry, Pipe flow ~ 5 fps
11.0 560 Total
Subcatchment 7S: SE SUB
Hydrograph
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,
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m ... m m ... ... .~ m ... -.. r-
:: Typ~ II: 2~-h~ 2 ye~r
I I ' I ! : ; ;
- u~. -- :...: - - - ... - .Rainfall::2.70~'..
, I ,
:: Runoff Area'-7~010 ac
! I I I i
4 -- _'u - ~. . - ~ u _:u - -; u - ~.' . - -'.""~.' u ~ u .:. 'R.'. un'.'o' 'ff' 'V'o' . I Ul'm' e' "=0.'37. l' 'a"f"
~ I I , : , I I , ; , , I : : : :
; ::,:':":::: R' ff b ' th-() 64"
~ 3 . u:u .l. u~.. .:u. ~ u .:... .:.. .l. ..~_ u:u .lu _ ~ u ~~!? u L. ~I?ul:-:. L. u .'. u
: Flow Lehgth=:S60'
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. . .
:CN=72
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20 25 30
I'
35 40
.
60
'1
75
',' 'I' 'I'
80 85 90
10
15
45 50 55
Time (hours)
65 70
1- RUnOffl
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 2 year Rainfal/=2.70"
Page 9
8/31/2006
Runoff
Subcatchment 8S: SUB 8 OFF-SITE
=
0.16cfs@ 12.12hrs, Volume=
0.020 af, Depth= 0.26"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 2 year Rainfall=2.70"
Area (ac)
0.940
Tc
(min)
1.0
13.6
CN Description
61 > 75% Grass cover, Good, HSG B
Length
(feet)
Slope
(ftIft)
Description
Velocity
(ftIsec)
Capacity
(cfs)
85
0.1
Direct Entry, Roof to yard
Sheet Flow,
Grass: Dense n= 0.240 P2= 2.70"
0.0200
14.6 85 Total
0.17
0.16
0.15
0.14
0.13~
0.12
0.11
~ 0.1
~
~ 0.09-
0 0.08-
i<:
0.07
0.06
0.05-
0.04: .
0.03
0.02
0.01
o ,.
0
Subcatchment 8S: SUB 8 OFF-SITE
Hydrograph
- -: - -........ - - -1- - - ~ - - - r- - -:~ - - -: -...... r-'" - -; -......;- -... -1- - -...,...... -:-...... -1-"'''' -t...... -,- _...
I
... n. ".. ...' .." n_ _ 1. .", ... _..'..._ n. ... .l n.. m ... L _. ...
I
I
"','--- T ---','" ---;... ---1-'"
I
____l___L__~___~___I___~___L___!___~___i____
I I I
- -+-.:--.. "--Type'II~24~h~'2year--
~ ~~,~ ~ ~I ~ : ~:~ ~~ J~ ~ ~I ~ ~~:~~ ~~ ~~~: ~ ~ J~ ~~ ~~ ~~:~ ~~ ~~ ~~ ~~ ~:~ R.afrlfaII-:2~.1()~'~~_
I I I
..0 .... --. o. .....' 0...0 : RunoffArea=OJ940ac ...
I . , I ; , . :
m ...' no .... no .,. ... _. ....m no no. _ ... ..... ... .n n. ,n';_ ... n...._... n' ...1..-... ... ..j ...... ,_ _. no __I... ... no ..j. no n.. no'n ... n._ ...1_ n' ""''; ... .." ..._ ..
-- __c -- -- --~.. .:... ~. .Runoff .Vblume:;:.O.020af---
. I ' , I ' . , . . I '
... .,--. ou 0 :'0'__' - --.~ --;RunoffDepth=O::26""
... ._:._._ _ .... _. m ... I.. n. m ...'.n _" n. .:" _. ,....n \._ ... _. ...... .......;.. _ _ -1.- ... ....+... ... _ ,... m ... -1..-... _... _... _;... _... ..
0..0 ......:. .. - 00'" . . : 'Flow. LengthF=85'...
I I I! ..
0.. ...' ........ .~ '.. ~ ....:':.. _ ...~. ... ....:..~' 0 .... __.0..... . ..'.:::: iTG. :~~1 ~~_~: roHi ~.'"
"'''',''' -... ~ - - -,- - - ~... _...:- - - -,'" - } - - -:-... - ~ - -... ~ - - -:GN=61-.....
I I I I
ml_... m.. ....m m "._.. ___I '_Im n'
I I I
... l.. ... .._ f... "."...... "." .". ... ..1__ ... n. ... m ....w.n ..
I I I
I
m n. ... m ... ... .....n ... '_1_ n. ... -; _'n'"
I
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I
... ... "." y "." n_
______1.__
I
I
m t'.-
I
m ..\...n
I
m n. ... _.n .n .~. d. ...
I
I
I
... L m m ..,
I
I
..- d. n' f" ~.. ..
I
I
n. .. m .1. .n
I
I
i'
I
I' ,., I I' . '\" I' I I"
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
Time (hours)
1- RUnOffl
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAO@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type" 24-hr 2 year Rainfa//=2.70"
Page 1 0
8/31/2006
Runoff
Subcatchment 9S: SUB MIT AREA
=
2.58 cfs @ 11.93 hrs, Volume=
0.105 af, Depth= 0.72"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 2 year Rainfall=2.70"
CN Description
61 > 75% Grass cover, Good, HSG B
77 Woods, Good, HSG D
85 Mitigation Wetland
74 Weighted Average
Tc Length Slope Velocity Capacity Description
(min) (feet) (ftIft) (ftIsec) (ds)
2.0 230 0.3300 1.9 Lag/eN Method, AS
Area (ac)
0.620
0.640
0.480
1.740
2
:i
~
~
o
ii:
1- - -. -. .- ... - ...
o
o
Subcatchment 9S: SUB MIT AREA
Hydrograph
I
I
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I
I
I
. ..."m .... m "',
I
I
I
I
I
I
I
I
I
I
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I
I
Type II: 2~-hr< 2 year
Rainfall=2.70"
I
mRuriofrAfe~i~11740ac-
I
Runoff Vblume=O.1 05 af
j R~n<?ff pept~=~. 72"
... _ _ _ u Flo~ ~~_~~!~==.=~~~~:_
I Tc=2.0:min
. . .
:CN=7'4
. . . .
. . . .
. . . .
no ... ... ... '" '.. _,. ... ... no .. ... _. no...
no .... ....1
I I. .
I I
I
I
I
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I
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I
I
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I
I ,
... ... ...... n. ..' ... ~'n ... .........
5
I
75 80
f' "\ 'I' 'j' I I' 'I'
25 30 35 40 45 50 55 60 65 70
Time (hours)
15 20
1- RunOff'
100
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAO@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 2 year Rainfal/=2.70"
Page 11
8/31/2006
Inflow Area =
Inflow =
Outflow =
Primary =
Pond 2P: NORTH POND
23.970 ac, Inflow Depth = 0.68"
22.34 cfs @ 12.04 hrs, Volume=
2.07 cfs @ 13.02 hrs, Volume=
2.07 cfs @ 13.02 hrs, Volume=
for 2 year event
1.356 af
1.338 af, Atten= 91 %, Lag= 58.3 min
1.338 af
Routing by Sim-Route method, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Starting Elev= 866.50' Surf.Area= 0.690 ac Storage= 2.820 af
Peak Elev= 867.24' @ 13.02 hrs Surf.Area= 0.744 ac Storage= 3.368 af (0.548 af above start)
Plug-Flow detention time= (not calculated)
Center-of-Mass det. time= (not calculated)
#
1
Invert
857.00'
Elevation
(feet)
857.00
858.00
860.00
862.00
864.00
866.00
866.50
868.00
870.00
870.50
# Routing
1 Primary
2 Device 1
Avail.Storage Storage Description
6.183 af Custom Stage Data (Prismatic) Listed below
Surf.Area
(acres)
0.010
0.140
0.210
0.280
0.370
0.570
0.690
0.800
0.950
1.030
Inc.Store
( acre-feet)
0.000
0.075
0.350
0.490
0.650
0.940
0.315
1.118
. 1.750
0.495
Cum.Store
(acre-feet)
0.000
0.075
0.425
0.915
1.565
2.505
2.820
3.938
5.688
6.183
Invert Outlet Devices
866.50' 18.0" x 20.9' long Culvert RCP, sq.cut end projecting, Ke= 0.500
Outlet Invert= 866.30' S= 0.0096 'f n= 0.013 Cc= 0.900
864.00' 15.0" x 30.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500
Outlet Invert= 864.30' S= -0.0100 'f n= 0.013 Cc= 0.900
Primary OutFlow Max=2.07 cfs @ 13.02 hrs HW=867.24' (Free Discharge)
L1=Culvert (Barrel Controls 2.07 cfs @ 3.5 fps)
L2=Culvert (Passes 2.07 cfs of 5.07 cfs potential flow)
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 2 year Rainfal/=2.70"
Page 12
8/31/2006
25_
24
23,
22
21-
20
19
18~
17:
16
15
~ 14:
~ 13:
~ 12,
Ii: 11-
10
9"
8-
Pond 2P: NORTH POND
Hydrograph
~___;___.J._
__!___I___J___l___L__~___!___~__~___l___~__2___L__
I I I!
__L___L__J___l___i___J___~___
I I I
... T"'''' --1- "''''',''' -- on --,- --......., - ... .~ -t-... -. -I
- - -1- '- - u - -- - --Inflow Area=23.970-ac -
_~______L___t___________________________________________________
__J___
m ... ... L ._ ... _1m... ... .J
I
I I
---!---~---~---I--
I I
... -.. -- -. - -I -
... m n. "_. ... _. ..., _. _~ ... ,.. ... _ ... ,_ ... ... -j __ ... __
. . .
I I I I
= = =,== = ~=.= =~ = = =;= = = ~ == =:= = = ~= = = r = = =c = = J= = = r = = =:J:~ealr Elev;;a67~24~= =
...--'- u1 - _ =~ = = =i= = =~= = =:== = ~== =; == =,=== :=== ~ ===,= ==Sfqra~fe~3~t36:8 =al =
- ... ... -.'" ... ... "I ... - ... I" ... ... -,'" ... ... T ... ... ... 1- ... ... -, ... ... ... T - ... ...!m ... ... -; ... ... ... T ... ... ... 1- ... - -, ... ... ... T ... ... - 1- ... - '1 ... ... ... i ... ... ... ,- ... ... i ... ... ...
.._ m-." .._..l L. 000 000 ... .. 000 m!. .. ...1.. ...000 m~. ... ... 000"" ... _ 000-'" . .t. ... .._... ...).
I I I I I I
..~ .. ._ l.. 000 000 ,l.. ... I,.. .J.. .. .... .. im 000 .... ...1 000 ... ... .j. ... ... ... ;.._ ... ... m ._ ._ ... .~ .
I I I I I
- - -; - - - "T - .. - r - - -j - - - T" - - - i- - - i - - - '!' - - - i- ... - i - - - T" - - -!- - - -; - - - T - - -1- - - ! - - - :- - - -;- - - --; - - -
- - - _! - - - ~ - - - ~ - - - - + - - - - _: - - - ~ - - ...:_ - - ~ - - - + - - _:_ - - _, - - - + - - - - ~ ... - - ~ - - _I _ _ _ ~ _ _ _
00 000 .... ... .. .. _ I.. : .. ... ... 1. ". ... '''1'' ." ... "i~" m.j.., .1. ..I...
1 1 I I I I
000... T'" '''r'' '"1''' 000 "'T mi'- -'--1'
_ _... J... _~... .~ ... ..... . n. _ .... ... ...! ... ..._ ... 1 .. ". ... ... _. ... ... J ...
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, I
6 .,.
5 +
4- .. .- - - " -
3.
2
1 ,
0-" .
o 5
_ _ L _ _ _i _ _ _ 1. _ _ _1_ _ _ .J _ _ _ J... _ _ _ L _ ... .J _ _ _ .1.. _ _ _:_ _ _ ~ _ _ _ .L _ _ _ i_ _ _ .J _ ... ... L _ _ _;_ _ _ .J _ _ _
... .-1"..
I
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I
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I
... .... -I - ... ~.
_ .... _ ... .J _
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... .......000 ... ..._...1___
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_...L......~_......L_...m!..._m~__
...1. ___!_ __,_I...
I
. . ......------T
i___~_..._l___L......~___l
I
, '
80
, ,
85
-,
90
'j'
30
, '
45 50 55
Time (hours)
,
95 100
,
60
,
65
70
75
15
25
35
40
20
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 2 year Rainfal/=2.70"
Page 13
8/31/2006
Inflow Area =
Inflow =
Outflow =
Primary =
Pond 6P: SW POND
12.040 ac, Inflow Depth = 0.69"
6.04 cfs @ 12.02 hrs, Volume=
0.90 cfs @ 13.69 hrs, Volume=
0.90 cfs @ 13.69 hrs, Volume=
for 2 year event
0.689 af
0.682 af, Atten= 85%, Lag= 100.3 min
0.682 af
Routing by Sim-Route method, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Starting Elev= 917.50' Surf.Area= 0.369 ac Storage= 1.436 af
Peak Elev= 917.95' @ 13.69 hrs Surf.Area= 0.386 ac Storage= 1.606 af (0.170 af above start)
Plug-Flow detention time= (not calculated)
Center-of-Mass det. time= (not calculated)
#
1
Invert
909.00'
Elevation
(feet)
909.00
910.00
912.00
914.00
916.00
917.50
918.00
920.00
920.50
# Routing
1 Primary
2 Device 1
Avail.Storage Storage Description
2.730 af Custom Stage Data (Prismatic) Listed below
Surf.Area
(acres)
0.010
0.084
0.128
0.179
0.237
0.369
0.388
0.467
0.531
Inc.Store
(acre-feet)
0.000
0.047
0.212
0.307
0.416
0.455
0.189
0.855
0.250
Cum.Store
( acre-feet)
0.000
0.047
0.259
0.566
0.982
1.436
1.626
2.481
2.730
Invert Outlet Devices
917.50' 15.0" x 15.5' long Culvert RCP, sq.cut end projecting, Ke= 0.500
Outlet Invert= 916.50' S= 0.0645 '/' n= 0.013 Cc= 0.900
915.00' 15.0" x 27.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500
Outlet Invert= 915.27' S= -0.0100 'I' n= 0.013 Cc= 0.900
Primary OutFlow Max=0.90 cfs @ 13.69 hrs HW=917.95' (Free Discharge)
L1=Culvert (Inlet Controls 0.90 cfs @ 2.3 fps)
L2=Culvert (Passes 0.90 cfs of 3.96 cfs potential flow)
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 2 year Rainfal/=2.70"
Page 14
8/31/2006
~
~
;:
~ 3
Pond 6P: SW POND
I I
I I
I I
I I
I I
on ....J ... _. _.... ....L .0.
I I
I I
I I
I I
I I
I ; : Iii I
-~-----------I----------I--
I I
I I
I I
I I
I I I
-,- - - T - - -i- - - -: - - -:- - -,-- - i -- -,- - - -,- - - T - - -:- - - - - -1- - -,-'" - i - - - i'" --
6
5
4
2
o
o
, .
35
, .
40
5
10
15
20
25
30
Hydrograph
I
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I
"i
I
I
I
I
I
..... .....1
I
I
I
I
I
I
I I
... on ... ... "j" on"i"
InflovV Area=12.040 a,e
I I! I
PeakElev=917~95~ .
, I I . . ,
Stqrage~1.!60~ ~f
I
I
I
I
....-;-.- -'1--...-.
'... m ... n.t n. n. ... -).
I
I
I
I
I
n. no n' ... on on ~..
I
I
I
I
I
....l..
I
I
I
I
I
. . ,
. .... ... ... ... .... ... ~.
; I
------1----
45 50 55
Time (hours)
,
65
, ,
85
90
95
,
80
. ,
70
,
75
60
,
100
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 2 year Rainfal/=2.70"
Page 15
8/31/2006
Pond 7P: SE POND
Inflow Area =
Inflow =
Outflow =
Primary =
7.010 ac, Inflow Depth = 0.64"
6.07 cfs @ 12.04 hrs, Volume=
0.63 cfs @ 12.87 hrs, Volume=
0.63 cfs @ 12.87 hrs, Volume=
for 2 year event
0.371 af
0.366 af, Atten= 90%, Lag= 49.6 min
0.366 af
Routing by Sim-Route method, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Starting Elev= 921.50' Surf.Area= 0.373 ac Storage= 1.365 af
Peak Elev= 921.87' @ 12.87 hrs Surf.Area= 0.388 ac Storage= 1.507 af (0.142 af above start)
Plug-Flow detention time= (not calculated)
Center-of-Mass det. time= (not calculated)
#
1
Invert
913.00'
Avail.Storage Storage Description
2.524 af Custom Stage Data (Prismatic) Listed below
Elevation Surf.Area
(feet) (acres)
913.00 0.010
914.00 0.072
916.00 0.115
918.00 0.170
920.00 0.230
921.50 0.373
922.00 0.393
924.00 0.574
# Routing Invert
1 Primary 921.50'
2 Device 1 919.50'
Inc. Store
(acre-feet)
0.000
0.041
0.187
0.285
0.400
0.452
0.191
0.967
Cum. Store
(acre-feet)
0.000
0.041
0.228
0.513
0.913
1.365
1.557
2.524
Outlet Devices
15.0" x 40.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500
Outlet Invert= 921.00' S= 0.0125 'f n= 0.013 Cc= 0.900
15.0" x 23.5' long Culvert RCP, sq.cut end projecting, Ke= 0.500
Outlet Invert= 921.50' S= -0.0851 'f n= 0.013 Cc= 0.900
Primary OutFlow Max=0.63 cfs @ 12.87 hrs HW=921.87' TW=917.92' (Dynamic Tailwater)
L1=Culvert (Controls 0.63 cfs)
L2=Culvert (Inlet Controls 0.63 cfs @ 2.1 fps)
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAO@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type" 24-hr 2 year Rainfal/=2.70"
Page 16
8/31/2006
Hydrograph
Pond 7P: SE POND
6
I
I
I
I
.. T
I
I
I
I
on ... on r
I
I
I
I
on on.... r"
Inflow Are'a='l.01 0 ac
I I I
Peak:ElevF921"~81~ -
I I! I
: storage=1.507 af
..< __ ... _ l. ... ... n.: _. _ ... . _ .n ._ ... +. _. .... _.:_ _. _ ... ... _ _. L _
5 - --- --- ._, - - - -. .- -. .- ,--- .- - -- - - . -.
~
~
4
2
- .
35
;:
o
u:
3
: ; !
.n no ... ... on on m ...... _.
o "
o
"
20
- ,
25
, '
30
" -
40
'I 'i
45 50 55
Time (hours)
5
10
15
I
I
I
I
I
I
.... ... no T'
I
I
I
I
I
-r -.
I
,
60
65
"I"
70
I
I
I
I
I
......l.
I
I
I
I
I
I
. r
I
I
I
I
I
,-
I
I
I
I
I
I
.....r.
I
I
I
I
I
- r~
I
I
I
I
,
75
, i'
85
95
, '
90
"
80
100
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 2 year Rainfal/=2.70"
Page 17
8/31/2006
Inflow Area =
Inflow =
Outflow =
Primary =
Pond gp: MITIGATION AREA #1
1.740 ac, Inflow Depth = 0.72"
2.58 cfs @ 11.93 hrs, Volume=
0.06 cfs @ 16.18 hrs, Volume=
0.06 cfs @ 16.18 hrs, Volume=
for 2 year event
0.105 af
0.101 af, Atten= 98%, Lag= 255.1 min
0.101 af
Routing by Sim-Route method, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Starting Elev= 865.10' Surf.Area= 0.970 ac Storage= 0.526 af
Peak Elev= 865.12' @ 16.18 hrs Surf.Area= 1.082 ac Storage= 0.587 af (0.061 af above start)
Plug-Flow detention time= (not calculated)
Center-of-Mass det. time= (not calculated)
#
1
Invert
863.00'
Elevation
(feet)
863.00
864.00
865.00
866.00
# Routing
1 Primary
Avail.Storage Storage Description
3.811 af Custom Stage Data (Prismatic) Listed below
Surf.Area
(acres)
0.001
0.010
0.300
7.000
Inc.Store
(acre-feet)
0.000
0.006
0.155
3.650
Cum.Store
(acre-feet)
0.000
0.006
0.161
3.811
Invert Outlet Devices
865.10' 10.0' long x 20.0' breadth Broad-Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63
Primary OutFlow Max=0.06 cfs @ 16.18 hrs HW=865.12' (Free Discharge)
L1=Broad-Crested Rectangular Weir (Weir Controls 0.06 cfs @ 0.3 fps)
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 2 year Rainfal/=2.70"
Page 18
8/31/2006
2
~
~
3:
0
u:
1-
Pond 9P: MITIGATION AREA #1
Hydrograph
Inflow Are'a=:1. 740 ac
I ; I
P' k' EI' I 8'65' 12'
ea :eV1=, ~
... m .... m ... ... "r ... ... n. .... m ... ... .n n. ... T' .~ . . .- t" ".
storage=0.587 af
I i I:; I
I
I I I
m ._ J m . .!.. -...-.-. I
I I
I I
I I
I I
I I
I I
I I
I I
I I
I I
I
I
I
I
, ' 'i' " , ' " " ' '" "i " ' , ' , . ' " I
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
Time (hours)
o
o
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type" 24-hr 10 year Rainfal/=4.20"
Page 19
8/31/2006
Time span=0.00-100.00 hrs, dt=0.01 hrs, 10001 points
Runoff by SCS TR-20 method, UH=SCS
Reach routing by Sim-Route method - Pond routing by Sim-Route method
Subcatchment 1S: SUB 1 TO DITCH Runoff Area=12.980 ac Runoff Depth=1.46"
Flow Length=160' Tc=23.3 min CN=70 Runoff=18.44 cfs 1.584 af
Subcatchment 25: CENTER OF SITE Runoff Area=23.970 ac Runoff Depth=1.67"
Flow Length=1 ,005' Tc=11.2 min CN=73 Runoff=58.84 cfs 3.341 af
Subcatchment 35: NE OFF-SITE Runoff Area=2.020 ac Runoff Depth=1.67"
Flow Length=70' Tc=8.6 min CN=73 Runoff=5.48 cfs 0.282 af
Subcatchment 5S: SE OFF-OSITE Runoff Area=5.690 ac Runoff Depth=0.92"
Flow Length=300' Tc=37.4 min CN=61 Runoff=3.14 cfs 0.434 af
Subcatchment 6S: SW SUB Runoff Area=5.030 ac Runoff Depth=1.82"
Flow Length=745' Tc=9.1 min CN=75 Runoff=14.57 cfs 0.762 af
Subcatchment 7S: SE SUB Runoff Area=7.010 ac Runoff Depth=1.60"
Flow Length=560' Tc=11.0 min CN=72 Runoff=16.55 cfs 0.936 af
Subcatchment 85: SUB 8 OFF-SITE Runoff Area=0.940 ac Runoff Depth=0.92"
Flow Length=85' Tc=14.6 min CN=61 Runoff=0.99 cfs 0.072 af
Subcatchment 95: SUB MIT AREA Runoff Area=1.740 ac Runoff Depth=1.74"
Flow Length=230' Tc=2.0 min CN=74 Runoff=6.33 cfs 0.253 af
Pond 2P: NORTH POND Peak Elev=868.33' Storage=4.230 af Inflow=58.84 cfs 3.341 af
Outflow=8.00 cfs 3.322 af
Pond 6P: SW POND Peak Elev=918.50' Storage=1.842 af Inflow=15.67 cfs 1.693 af
Outflow=3.61 cfs 1.686 af
Pond 7P: SE POND Peak Elev=922.37' Storage=1.735 af Inflow=16.55 cfs 0.936 af
Outflow=2.84 cfs 0.931 af
Pond 9P: MITIGATION AREA #1 Peak Elev=865.14' Storage=0.667 af Inflow=6.33 cfs 0.253 af
Outflow=0.20 cfs 0.249 af
Total Runoff Area = 59.380 ac Runoff Volume = 7.664 af Average Runoff Depth = 1.55"
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type" 24-hr 10 year Rainfal/=4.20"
Page 20
8/31/2006
Runoff
Subcatchment 1 S: SUB 1 TO DITCH
=
18.44 cfs @ 12.18 hrs, Volume=
1.584 af, Depth= 1.46"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 10 year Rainfall=4.20"
Area (ac)
1.600
5.170
0.980
5.230
12.980
CN Description
61 Pasture/grasslandlrange, Good, HSG B
85 Wetland
55 Woods, Good, HSG B
61 > 75% Grass cover, Good, HSG B
70 Weighted Average
Tc Length Slope Velocity Capacity Description
(min) (feet) (ftIft) (ftIsec) (cfs)
23.3 160 0.0185 0.1 Sheet Flow,
Grass: Dense n= 0.240 P2= 2.70"
20
19
18'
17.
1~.
15
14
13-
~ 12
Ut .
~11.
:: 10
o
u:: 9~
8
7,
6
5
4.
3-
2
1
o
o
Subcatchment 1 S: SUB 1 TO DITCH
Hydrograph
_ _ _! _ _ _ .... _ _ _ ~ _ _ _;_ _ _ -l _ _ _ ..... _ _ _:_ _ _ -i _ _ _ .i- _ _ _;.... _ _ _, _ _ _ -t- _ _ _ i-- _ _ _; _ _ _ ...;. _ _ _;.... _ _ _;_ _ _ ..... _ _ _ i- - - -
I
... ... ...:....... no .1...
I
... _ _"m... _..1_
I
...i...... .J n.
I
... n. n.' '.,_ ... n. .J. ~.
I
______..1_
I
...._ _1._.
I
..~ ...
,
I
I
,
,
,
,
___~_ ...:__.__i__ ~___;....__~___~
,I ,
no L. .... ... no; no _.._ no ..1 no ...~. n. .,.. .n "..... _;...... .... .L ... ... __ L. ... ... _.,:... no .. ..l. on no no l... ... ... ...i .... on ... i. n.. ... ... l... _. n. n. i... .... ... ....: ... ... _" L ... _. n.
- ~ - - -:- - - ~ - - - ~ - - -i- - - ~ - - -, - - - ~ - - -:-, - ~T.ype.: 1I-~4..h~ -10. ye~r--
': .' "': .... '; .. ...... , ... ..' ... .... .. .... ... . ... .... ...., ~. ~.' '. ....: .... : ....: .' ....:Ra hila II .' ~[20" .
I I I I i
-: u -:- -':" -:" -:- - -: - -', --', u -'-RLfnoff-Atea=-12~-g80'~fC--
-(-- --~----- ------------ -- -_.~'---~.,--~---~_._-_._-----~---~---
: :, m,', 'mRur)ofrVplqme=1,~584af
, i- - , ~ ~ ~ - - , - - - - , ' - - ~ ~ ~ ~ ~ ~ ~ - - ~ ~ + ~Ru n off 'r:)e'pth- - ~'~-46 .~. ~ ~
~. ~.. ~.' m ... ~.~ ~i"" - .....' ... ... m" ~- - ,. '.. '.~. .~.:~ ~~'" ,... .'..., "FI'6w'L.ehg1:ti.'i160" ,.
j I I ! : ,: :
- : - - -,- - .. .: m - - T ....:,~ ., ,;, ~ ~ ~ ~,.' ~.. .~. .~. ~,' ~ ~ ~;, ~ ~ ~~, ~~: :,' .. ~.:.. ... ~;,Tc-.:""._ :23... . :3:, mi.n... m
... r- '....n -i'" .n. no "1 ... -.,... T"
- ~ - ... -:- - - ~ ... - - ~ - - ...:- ... - ~ ... ... - ~ - - - ~ ... ... -:... ... ... ~ ... ... ... ~ ... ... -;... ... ... ~ ... ... - ~ - - -;CN=70- ...
f" ..' _",n. no ... "1 ... .,...... n. ,... n..... ... roo'" n. .... no ... n. T no.n ... __~.. .n ... -i- n' ... -!'-
I I I I
...r-.. ......u.._., ...... --'1- "'-'7"'" --r"'" ---i'" ... -'T--.n "'r"'''''n -!' no... _'...m -... ....m _;n.__., --....,. -_.-
, , I
I" ... ... -....... '"' n' "-1 n' ... ... ..." n. ... ... -t... no r" .
I I I I
--'_._-~ --+---~---!---~..._...,--_...~._------
,
I
no m _. .n. n. n. T _.
I
... -... -!... ... -- "1 ...
,
mmm....mm.~
I
... - -, ... ... ... -r ...
I
I
... '_,_" n. n. T
I
...-..-....... .........1....
I
m +.n
,
'I' "i I '1 'I' 1 ." i' l i"
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
Time (hours)
1- Runoffl
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type 1/24-hr 10 year Rainfal/=4.20"
Page 21
8/31/2006
Subcatchment 2S: CENTER OF SITE
Runoff
3.341 af, Depth= 1.67"
=
58.84 cfs @ 12.03 hrs, Volume=
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 10 year Rainfall=4.20"
Area (ac)
3.210
2.180
1.200
0.320
0.690
16.370
23.970
CN Description
98 Rooftops
98 Roadway
98 Driveway
98 Sidewalk
98 Open water
61 > 75% Grass cover, Good, HSG B
73 Weighted Average
Tc
(min)
1.0
6.7
Slope Velocity Capacity Description
(ftIft) (ftIsec) (cfs)
Length
(feet)
1.0
Direct Entry, Roof to yard
125 0.2600 0.3 Sheet Flow,
Grass: Dense n= 0.240 P2= 2.70"
125 0.0200 2.1 Shallow Concentrated Flow,
Grassed Waterway Kv=" 15.0 fps
755 5.0 Direct Entry, Pipe flow @ 5 fps
1,005 Total
2.5
11.2
Subcatchment 2S:' CENTER OF SITE -
Hydrograph
65'--u,u
60
-'---~ - ~---'---~-
,
I
, ,
I I I
I -'---l---r-- --~---r---~-- --T---r-- --------- ----------
I I I I
. -~ - - -:- - - ~- -- ~- --'-- - ~ -- - - -- -~ - - -- - - ~Ty'pe.:II-~4-hf -~O ye~r--
... H _.:..: ... ':Rainfall=4~20'L
"':RurioffArea~23L970 at
Ru~off'Vplu rrle~~~34 ~"ar-
------.---.-------------------- ...
.jR~n~tt;o~'pth-:-1j.6Z'-'. ...
I I . I I I I I.
I ... ... ;.Flow.Length:-.1,005..
I I . . ' . . .
..- .... - -- -. ... ... ... ....~. ... ... ~... ....:.. ..!Tc=1.1.2; min. ...
-~ - - _'- - - ~- u ~. u:u _ ~u U - - -:- -. -:- - - ~ - - -:- - - -:- - -~ u -~ u -:GN=7'3--
I
I
55 -- - -, - - - ., .
I
,
50 .....,.......,
I
,
I
.. ...:... -.. .~ .-1 _.
I
I
L__________L___i___~__
I I
, I
m I.. I __ _. .1_ ... ._. ... ,_ ... _. _.: ... _. _.
i I
I I
I I
-~-- I -~---.---~---
I I
, I
r' m .- -1 _. .- .- T. ... ... ... ,... m ... ... ..- -- - -
i I
I I
m ~.. ... m ...... _..._ -1 _ _.. _ t. _. n m ,m
I I
I I
_~ ___~___L___,___~_
I I
45
.M ..
I
I
..I.
40
..
~ 35-
~
~ 30
u.
,
I
. ..... ..r ...
I
I
m .t ...
I
I
25
20
I
15 ---I--_~.
I
I
- - 'I ...
I
I
5 - - -, - - - .,
I
I
I I I
I ::: I I
-r---.---l---~-- --~---~---~-- --T---(-- --~---~---.---~-------
I 1 I I ,
I I I 1
- r m - -,- ... - ..., ... _ ... T _ _ -;- _ ... ~ - - _ -; - - ...,- - ... -, - - ... T - - - r - - -, - ... ... T - ... ... , - - -,- - - -, _ - - :- - - ...
I I I I !
I I I
10
0,
o
80
j' . ,.
85 90
,
95 100
1 I I'
45 50 55
Time (hours)
l ' "
65 70
','
75
,
10
15
20
25
30
35
40
60
1- Runoff~
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type 1/24-hr 10 year Rainfal/=4.20"
Page 22
8/31/2006
Runoff
Subcatchment 3S: NE OFF-SITE
=
5.48 cfs @ 12.01 hrs, Volume=
0.282 af, Depth= 1.67"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 10 year Rainfall=4.20"
Area (ac)
0.110
0.390
0.040
0.090
1.390
2.020
Tc
(min)
1.0
7.6
CN Description
98 Rooftop
98 Roadway
98 Driveway
98 Sidewalk
61 > 75% Grass cover, Good, HSG B
73 Weighted Average
Length
(feet)
Slope Velocity Capacity Description
(ftIft) (ftIsec) (cfs)
8.6
6
5 --
4-
2
o
o
70 0.0586
Direct Entry, Roof to yard
Sheet Flow,
Grass: Dense n= 0.240 P2= 2.70"
0.2
70 Total
Subcatchment 3S: NE OFF-SITE
Hydrograph
... h_'" h_'" ......
. ,
m ... .... f""
I
I
I
I
I
I
I
I
... ... ....Im
I
I
I
I
I
I
... ...1...
I
I
I
I
I
,
... .......,..
I
I
I
I
I
I
5
.. "
10
25
. ,
30
,
35
,.
40
. ,
80
. ,
85
,
15
, ,
45 50 55
Time (hours)
60
65
70
75
20
,
90
,
95 100
1- Runoffl
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAO@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type" 24-hr 10 year Rainfal/=4.20"
Page 23
8/31/2006
Runoff
Subcatchment 5S: SE OFF-OSITE
=
3.14 cfs @ 12.39 hrs, Volume=
0.434 af, Depth= 0.92"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 10 year Rainfall=4.20"
Area (ac)
0.150
0.680
4.860
5.690
Tc
(min)
37.4
3
(ij' 2
~
::
o
u:
o
o
CN Description
98 Rooftops
55 Woods, Good, HSG B
61 >75% Grass cover, Good, HSG B
61 Weighted Average
Length
(feet)
300
Slope
(ftlft)
0.0200
Velocity
(ftlsec)
0.1
Capacity
(cfs)
Description
Sheet Flow,
Grass: Dense n= 0.240 P2= 2.70"
Subcatchment 5S: SE OFF-OSITE
Hydrograph
,
,
I
I
I I
':'" --i- --~ - - 'iType:U ~4~tar'~O'year
Rain'fall=4.20"
I .;
Runoff Areap5l690 ac
I
""" ~'" - .;. .~ur)off ,Vol~m~=Q.4~4 af '"
R~n9ff ,bept~=o,.9~"
Flow Length='300'
, I . . . .
:Tc=37.4:min
...... no no._ _ no ..om j..... .__...:~.... _....:... no m,.. no no ."'m.....
. , .
'CN=61
, . .
. . . i . .
5
" ,
65
"-I
I
I
I
I
I
I
I
I
I
,
I
,- - - --I
I
,
I
I
I
I
I
I
I
I
I
"'1- -.-.
I
'"
15
, .
20
"
30
j' 'I
45 50 55
Time (hours)
,
25
,
35
,.
40
10
60
70
75
80
95
1- Runoffl
100
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 10 year Rainfal/=4.20"
Page 24
8/31/2006
Runoff
Subcatchment 6S: SW SUB
=
14.57 cfs @ 12.01 hrs, Volume=
0.762 af, Depth= 1.82"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 10 year Rainfall=4.20"
Area (ac)
0.110
1.100
0.092
0.250
0.370
3.108
5.030
Tc
(min)
1.0
5.7
2.4
9.1
16_
15
14-
13-
12
11
10_
~ 9_
~
~ 8
0
ii: 7
6-
I
______1_
I
I
5 -. ...,-. ... _. ~ ..
I
I
I
3- . ... -. -' - - -- J
I
I
2 . - - -. - - - ., -
I
.!.
I
I
o.
o
CN Description
98 Rooftop
98 Roadway
98 Driveway
98 Sidewalk
98 Open water
61 > 75% Grass cover, Good, HSG B
75 Weighted Average
Length
(feet)
Slope Velocity Capacity
(fUft) (fUsec) (cfs)
Description
40 0.0400 0.1
Direct Entry, Roof to yard
Sheet Flow,
Grass: Dense n= 0.240 P2= 2.70"
Direct Entry, Pipe flow ~ 5 fps
705 5.0
745 Total
Subcatchment 65: SW SUB
Hydrograph
I I
I I
.-/ ... .. .... t.. - m
I
I I
..... "i" ......i...
I I
- - -: - - - -+ -
I
I
- - -, - - - , -
I
...i.... n..J.
I
I
I
I
... ... -j .."
I
I
...1.. .. b_'" ..J... ... A. n.
I I
I I
... r'o'" "." ... "1
I I
.. _l.... ... ... ...;_ _ _ J _ _ _ ~ _ _
I
I
-.1-. - -
, . ,
. . .
....... no.. ..,...... 4.._
I' I . i j' 'I',.' 'j
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
Time (hours)
1- RunOffl
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAO@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type 1/24-hr 10 year Rainfal/=4.20"
Page 25
8/31/2006
Runoff
Subcatchment 7S: SE SUB
=
16.55 cfs @ 12.03 hrs, Volume=
0.936 af, Depth= 1.60"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 10 year Rainfall=4.20"
Area (ac)
0.690
0.710
0.280
0.100
0.360
4.870
7.010
CN Description
98 Rooftop
98 Roadway
98 Driveway
98 Sidewalk
98 Open water
61 > 75% Grass cover, Good, HSG B
72 Weighted Average
Tc Length Slope Velocity Capacity Description
(min) (feet) (ftIft) (ftIsec) (cfs)
8.5 55 0.0270 0.1 Sheet Flow,
Grass: Dense n= 0.240 P2= 2.70"
1.3 160 0.0200 2.1 Shallow Concentrated Flow,
Grassed Waterway Kv= 15.0 fps
1.1 345 5.0 Direct Entry, Pipe flow ~ 5 fps
11.0 560 Total
18 -
17
16
15
14
13
12
11
~ 10
~
:= 9
0
u:: 8-
7
6
5
4
3-
2
1-
O'
,
0
Subcatchment 7S: SE SUB
Hydrograph
---l---~---~--4---~---~-
,
... "." '!"h
,
I
... 'r
I
... on on'.. ... .n .1.
I
... ... .1....
I
I
... n...... n. 'r
,
n. n. .t'..
,
. ..,I...
,
I
... r~
I
... ~..
I
...1.....
I
I
...1.....
I
n' t.. -...
I
... l.. _n_'n
I
I
I
... on """I ...
I
- n. "1
I
_... ....J "''''
I
... "'"' .~ n'
I
..I
I
I
---i---~-'" r---:---,---r---I---'---r---r--~---~---r--~---T---r---i---,---r---
I I I I
10
"
20
. '.' ., i J
45 50 55
Time (hours)
80
I' . 'I
85 90
-,
70
. -
75
15
25
30
35
40
60
65
.
95 100
1- Runoff~
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 10 year Rainfal/=4.20"
Page 26
8/31/2006
Subcatchment 8S: SUB 8 OFF-SITE
Runoff
0.072 af, Depth= 0.92"
=
0.99 cfs @ 12.09 hrs, Volume=
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 10 year Rainfall=4.20"
Area (ac)
0.940
CN Description
61 > 75% Grass cover, Good, HSG B
Tc
(min)
1.0
13.6
Slope Velocity Capacity Description
(ftlft) (ftlsec) (cfs)
Length
(feet)
85 0.0200
0.1
Direct Entry, Roof to yard
Sheet Flow,
Grass: Dense n= 0.240 P2= 2.70"
14.6
85 Total
Subcatchment 8S: SUB 8 OFF-SITE
Hydrograph
1 - - ....
I
I
I
m ... m,'" - -- -; ... ... -- r ... _. --i-
I I
I I
I I
I I
I I
I I
I
I
I
I.
I
I
I
I
-: m m _ :-- m ... m;m. __ m -:- __ m m r" m_ _. _,'" __ ... ,_' ... ," _. m_ _, "." ..
I
,Type:1I ~4-~r 10 year
Rain'fall=4.20"
I
Runoff Area'-0~940 ac
I
Runoff Volume=O.072 af
. . . . , ' , ,
: Runoff pept~=o,.92"
Flow Length-8S'
I . - . .
:Tc~14.6:min
. . .
:CN=61
J!!
.e
I
I
I
... m -'1-- m_ -. ", .- .--.- ,"
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
~
o
u:
o
o
,.
80
,
25
<j" 'j I .".."
40 45 50 55 60
Time (hours)
.. ","
10
. ,
30
,
20
5
15
65
70
75
35
1- Runoff'
100
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 10 year Rainfal/=4.20"
Page 27
8/31/2006
Subcatchment 9S: SUB MIT AREA
Runoff
6.33 cfs @ 11.93 hrs, Volume=
0.253 af, Depth= 1.74"
=
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 10 year Rainfall=4.20"
Area (ac)
0.620
0.640
0.480
1.740
CN Description
61 > 75% Grass cover, Good, HSG B
77 Woods, Good, HSG D
85 Mitigation Wetland
74 Weighted Average
Tc
(min)
2.0
Length
(feet)
230
Slope
(ftlft)
0.3300
Velocity
(ftlsec)
1.9
Capacity
(cfs)
Description
Lag/eN Method, AS
Subcatchment 9S: SUB MIT AREA
Hydrograph
7
6
5
~ 4-
~
::
0
u: 3
2
... .
I
I
I
I
I
m m..L - -, - 0 m:Type,U 24~~rl0yearm
I I I Rain'fall=4.20"
____i___~_ __L___l___~___L___i___~___L___I___~___L___i___~___L___i___~___L___i___
: ' :: Runoff Area=1l7 40 ac
I I I I!
: .. .--'--.. m' ....... ... ...m: m ...: -RunoffVolume=0.253 af...
f I I . . : . L . . : :
! [:: Runoff ,bept~=1,.74"
.. m' m "': - ... mm m.... m mm: ... ..._;- -., 0... ... . 'F 10 Vii [ength-=-:230'"
I I I I . . . .
: . ..: : Tc=2.0'min
... ... ...1.. on ... .' on on on '.. on ... ...'.n.... ...... ... I... ... ...1 ... ... ,.. n.... m.... ... ... .~ ._ n.... j.. ' . .
: :: 1 : ;CN=74
I I I I I
I I I I
... ... .n [ . ... "n .n ... ... ... .... _ n' .,. ... ... n. ,_ n. ... ...1... .. n.. f..
I I I I
I I I I
I I I
I I
I
1
1
I
I
I
.. on 'm... ... ...1..
. . .
. . .
- ~ - .-' -. ... - .~
o
o
., .
20
.,
25
1
30
, .
35
.. '1"
65
.,
80
. ,
85
'j 'j 'I
45 50 55
Time (hours)
, .
70
,.
75
'I
90
.,
95
5
10
15
40
60
1- Runoff.
100
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type 1/24-hr 10 year Rainfal/=4.20"
Page 28
8/31/2006
Inflow Area =
Inflow =
Outflow =
Primary =
Pond 2P: NORTH POND
23.970 ac, Inflow Depth = 1.67"
58.84 cfs @ 12.03 hrs, Volume=
8.00 cfs @ 12.51 hrs, Volume=
8.00 cfs @ 12.51 hrs, Volume=
for 10 year event
3.341 af
3.322 af, Atten= 86%, Lag= 28.4 min
3.322 af
Routing by Sim-Route method, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Starting Elev= 866.50' Surf.Area= 0.690 ac Storage= 2.820 af
Peak Elev= 868.33' @ 12.51 hrs Surf.Area= 0.825 ac Storage= 4.230 af (1.410 af above start)
Plug-Flow detention time= 1,074.7 min calculated for 0.502 af (15% of inflow)
Center-of-Mass del. time= 195.8 min ( 1,046.5 - 850.6 )
#
1
Invert
857.00'
Elevation
(feet)
857.00
858.00
860.00
862.00
864.00
866.00
866.50
868.00
870.00
870.50
# Routing
1 Primary
2 Device 1
Avail.Storage Storage Description
6.183 af Custom Stage Data (Prismatic) Listed below
Surf.Area
( acres)
0.010
0.140
0.210
0.280
0.370
0.570
0.690
0.800
0.950
1.030
Inc.Store
(acre-feet)
0.000
0.075
0.350
0.490
0.650
0.940
0.315
1.118
1.750
0.495
Cum. Store
(acre-feet)
0.000
0.075
0.425
0.915
1.565
2.505
2.820
3.938
5.688
6.183
Invert Outlet Devices
866.50' 18.0" x 20.9' long Culvert RCP, sq.cut end projecting, Ke= 0.500
Outlet Invert= 866.30' S= 0.0096 'f n= 0.013 Cc= 0.900
864.00' 15.0" x 30.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500
Outlet Invert= 864.30' S= -0.0100 'f n= 0.013 Cc= 0.900
Primary OutFlow Max=8.00 cfs @ 12.51 hrs HW=868.33' (Free Discharge)
L1=Culvert (Passes 8.00 cfs of 8.22 cfs potential flow)
L2=Culvert (Inlet Controls 8.00 cfs @ 6.5 fps)
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 10 year Rainfal/=4.20"
Page 29
8/31/2006
65:
60-
55
50
45':
40
~ 35
.e
3:
0 30
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25
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15
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5
10
15
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Pond 2P: NORTH POND
Hydrograph
I
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40
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45 50 55
Time (hours)
. ,
60
, .
65
"
70
I
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,
no... "1
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I
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on m....... n. no.. ... m _..... on on "i
I
I
m.... on.. "1 n.
I
I
,
75
'I" 'j
80 85
90
, .,
95 100
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type 1/24-hr 10 year Rainfal/=4.20"
Page 30
8/31/2006
Inflow Area =
Inflow =
Outflow =
Primary =
Pond 6P: SW POND
12.040 ac, Inflow Depth = 1.69"
15.67 cfs @ 12.02 hrs, Volume=
3.61 cfs @ 12.86 hrs, Volume=
3.61 cfs @ 12.86 hrs, Volume=
for 10 year event
1.693 af
1.686 af, Atten= 77%, Lag= 50.6 min
1.686 af
Routing by Sim-Route method, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Starting Elev= 917.50' Surf.Area= 0.369 ac Storage= 1.436 af
Peak Elev= 918.50' @ 12.86 hrs Surf.Area= 0.408 ac Storage= 1.842 af (0.405 af above start)
Plug-Flow detention time= 1,182.4 min calculated for 0.249 af (15% of inflow)
Center-of-Mass del. time= 134.6 min ( 1,076.9 - 942.4)
#
1
Invert
909.00'
Elevation
(feet)
909.00
910.00
912.00
914.00
916.00
917.50
918.00
920.00
920.50
# Routing
1 Primary
2 Device 1
Avail.Storage Storage Description
2.730 af Custom Stage Data (Prismatic) Listed below
Surf.Area
(acres)
0.010
0.084
0.128
0.179
0.237
0.369
0.388
0.467
0.531
Inc.Store
(acre-feet)
0.000
0.047
0.212
0.307
0.416
0.455
0.189
0.855
0.250
Cum. Store
(acre-feet)
0.000
0.047
0.259
0.566
0.982
1.436
1.626
2.481
2.730
Invert Outlet Devices
917.50' 15.0" x 15.5' long Culvert RCP, sq.cut end projecting, Ke= 0.500
Outlet Invert= 916.50' S= 0.0645 'J' n= 0.013 Cc= 0.900
915.00' 15.0" x 27.0' long Culvert RCP, sq. cut end projecting, Ke= 0.500
Outlet Invert= 915.27' S= -0.0100 'J' n= 0.013 Cc= 0.900
Primary OutFlow Max=3.61 cfs @ 12.86 hrs HW=918.50' (Free Discharge)
L1=Culvert (Inlet Controls 3.61 cfs @ 3.4 fps)
L2=Culvert (Passes 3.61 cfs of 5.92 cfs potential flow)
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type" 24-hr 10 year Rainfal/=4.20"
Page 31
8/31/2006
on ... on I...
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Pond 6P: SW POND
Hydrograph
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40
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90
, ,
45 50 55
Time (hours)
. "
60
'j' "
95 100
., .
65
. O'
70
o'
75
15
20
25
30
80
85
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type 1/24-hr 10 year Rainfal/=4.20"
Page 32
8/31/2006
Pond 7P: SE POND
Inflow Area =
Inflow =
Outflow =
Primary =
7.010 ac, Inflow Depth = 1.60"
16.55 cfs @ 12.03 hrs, Volume=
2.84 cfs @ 12.40 hrs, Volume=
2.84 cfs @ 12.40 hrs, Volume=
for 10 year event
0.936 af
0.931 af, Atten= 83%, Lag= 21.7 min
0.931 af
Routing by Sim-Route method, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Starting Elev= 921.50' Surf.Area= 0.373 ac Storage= 1.365 af
Peak Elev= 922.37' @ 12.40 hrs Surf.Area= 0.426 ac Storage= 1.735 af (0.370 af above start)
Plug-Flow detention time= (not calculated)
Center-of-Mass del. time= (not calculated)
#
1
Invert
913.00'
Avail.Storage Storage Description
2.524 af Custom Stage Data (Prismatic) Listed below
Elevation Surf.Area
(feet) (acres)
913.00 0.010
914.00 0.072
916.00 0.115
918.00 0.170
920.00 0.230
921.50 0.373
922.00 0.393
924.00 0.574
# Routing Invert
1 Primary 921.50'
2 Device 1 919.50'
Inc.Store
(acre-feet)
0.000
0.041
0.187
0.285
0.400
0.452
0.191
0.967
Cum.Store
(acre-feet)
0.000
0.041
0.228
0.513
0.913
1.365
1.557
2.524
Outlet Devices
15.0" x 40.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500
Outlet Invert= 921.00' S= 0.0125 '/' n= 0.013 Cc= 0.900
15.0" x 23.5' long Culvert RCP, sq.cut end projecting, Ke= 0.500
Outlet Invert= 921.50' S= -0.0851 'I' n= 0.013 Cc= 0.900
Primary OutFlow Max=2.84 cfs @ 12.40 hrs HW=922.37' TW=918.45' (Dynamic Tailwater)
L1=Culvert (Barrel Controls 2.84 cfs @ 4.4 fps)
L2=Culvert (Passes 2.84 cfs of 2.89 cfs potential flow)
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type" 24-hr 10 year Rainfal/=4.20"
Page 33
8/31/2006
18 - - -, - - .m. 'f m. - - I"
17
16-
15
14
13
12 i
I
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20
Pond 7P: SE POND
Hydrograph
:- .- -. +
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I
25
'" .
30
j' ,
95
,
35
.,'
60
"
85
,
90
,
45 50 55
Time (hours)
, .
65
40
70
75
80
100
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 10 year Rainfal/=4.20"
Page 34
8/31/2006
Inflow Area =
Inflow =
Outflow =
Primary =
Pond 9P: MITIGATION AREA #1
1.740 ac, Inflow Depth = 1.74"
6.33 cfs @ 11.93 hrs, Volume=
0.20 cfs @ 13.85 hrs, Volume=
0.20 cfs @ 13.85 hrs, Volume=
for 10 year event
0.253 af
0.249 af, Atten= 97%, Lag= 115.6 min
0.249 af
Routing by Sim-Route method, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Starting Elev= 865.10' Surf.Area= 0.970 ac Storage= 0.526 af
Peak Elev= 865.14' @ 13.85 hrs Surf.Area= 1.229 ac Storage= 0.667 af (0.141 af above start)
Plug-Flow detention time= (not calculated)
Center-of-Mass det. time= (not calculated)
#
1
Invert
863.00'
Elevation
(feet)
863.00
864.00
865.00
866.00
Avail.Storage Storage Description
3.811 af Custom Stage Data (Prismatic) Listed below
Surf.Area
(acres)
0.001
0.010
0.300
7.000
Inc.Store
(acre-feet)
0.000
0.006
0.155
3.650
Cum.Store
(acre-feet)
0.000
0.006
0.161
3.811
Invert Outlet Devices
865.10' 10.0' long x 20.0' breadth Broad-Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63
Primary OutFlow Max=0.20 cfs @ 13.85 hrs HW=865.14' (Free Discharge)
L1=Broad-Crested Rectangular Weir (Weir Controls 0.20 cfs @ 0.5 fps)
# Routing
1 Primary
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAO@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type 1/24-hr 10 year Rainfal/=4.20"
Page 35
8/31/2006
Hydrograph
Pond 9P: MITIGATION AREA #1
I
I
I
I
I
.. "'lnflowAre'a=:1 :740 ac'
I I I I
P.ea k:e l'evF::=865~14~..
I I 1 I I
S~orage~O.~67 ~f
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4
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3
2
0-
o
,.
30
., .
40
, ,
45 50 55
Time (hours)
. ,.
5
., .
10
"
15
, .
35
20
25
.t..
I
I
I
I
I
.,
60
65
70
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75
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80
,
85
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90 95 100
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type" 24-hr 100 year Rainfal/=6.00"
Page 36
8/31/2006
Time span=0.00-1 00.00 hrs, dt=0.01 hrs, 10001 points
Runoff by SCS TR-20 method, UH=SCS
Reach routing by Sim-Route method - Pond routing by Sim-Route method
Subcatchment 1S: SUB 1 TO DITCH
Runoff Area=12.980 ac Runoff Depth=2.81"
Flow Length=160' Tc=23.3 min CN=70 Runoff=36.72 efs 3.034 af
Subcatchment 2S: CENTER OF SITE Runoff Area=23.970 ac Runoff Depth=3.09"
Flow Length=1,005' Te=11.2 min CN=73 Runoff=109.37 efs 6.169 af
Subcatchment 3S: NE OFF-SITE
Runoff Area=2.020 ae Runoff Depth=3.09"
Flow Length=70' Tc=8.6 min CN=73 Runoff=10.12 efs 0.520 af
Subcatchment 5S: SE OFF-QSITE
Runoff Area=5.690 ac Runoff Depth=2.01"
Flow Length=300' Te=37.4 min CN=61 Runoff=7.96 efs 0.951 af
Subcatchment 6S: SW SUB
Runoff Area=5.030 ac Runoff Depth=3.28"
Flow Length=745' Te=9.1 min CN=75 Runoff=26.21 efs 1.376 af
Subcatchment 7S: SE SUB
Runoff Area=7.01 0 ac Runoff Depth=2.99"
Flow Length=560' Te=11.0 min CN=72 Runoff=31.20 cfs 1.749 af
Subcatchment 8S: SUB 8 OFF-SITE
Runoff Area=0.940 ac Runoff Depth=2.01"
Flow Length=85' Te=14.6 min CN=61 Runoff=2.39 efs 0.157 af
Subcatchment 9S: SUB MIT AREA
Runoff Area=1.740 ae Runoff Depth=3.18"
Flow Length=230' Tc=2.0 min CN=74 Runoff=11.38 cfs 0.462 af
Pond 2P: NORTH POND
Peak Elev=870.07' Storage=5.753 af Inflow=109.37 efs 6.169 af
Outflow=11.16 efs 6.150 af
Pond 6P: SW POND
Peak Elev=919.44' Storage=2.240 af Inflow=29.59 efs 3.119 af
Outflow=6.77 efs 3.112 af
Pond 7P: SE POND
Peak Elev=923.11' Storage=2.092 af Inflow=31.20 efs 1.749 af
Outflow=5.86 cfs 1.743 af
Pond 9P: MITIGATION AREA #1
Peak Elev=865.17' Storage=0.781 af Inflow=11.38 efs 0.462 af
Outflow=0.50 efs 0.457 af
Total Runoff Area = 59.380 ac Runoff Volume = 14.418 af Average Runoff Depth = 2.91"
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type 1/24-hr 100 year Rainfal/=6.00"
Page 37
8/31/2006
Runoff
Subcatchment 1S: SUB 1 TO DITCH
=
36.72 cfs @ 12.17 hrs, Volume=
3.034 af, Depth= 2.81"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 100 year Rainfall=6.00"
Area (ac)
1.600
5.170
0.980
5.230
12.980
CN Description
61 Pasture/grassland/range, Good, HSG B
85 Wetland
55 Woods, Good, HSG B
61 > 75% Grass cover, Good, HSG B
70 Weighted Average
Tc Length Slope Velocity Capacity Description
(min) (feet) (ftlft) (ftlsec) (cfs)
23.3 160 0.0185 0.1 Sheet Flow,
Grass: Dense n= 0.240 P2= 2.70"
40" ..... "'," .. .. " .. ... - ,.. ... ... ",'" - .. -i - - - - - -'- - - " - - - " - - - ~ - - -, - - - , - - - ~ - - ..., - - - ., - - -- ~ .. - -'," .. - ~ - .. - .. - .. -
, I I
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I I
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I I
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I
30 ..I...
I
28" ...... ..., .... ... ... .1. ...
I
26A ..:...
~ 24- ... ...) .. ... ...:
.l!!
~ 22-:"
~ 20 u_'_u~_
u:: 18~ ... .....f ...
16 n. ... +
14 ----.---~-
12 ~ I
10
8.
6"
4
2
o i' I I . I" I"'! . , , . I' j . 'I i 1 .. I "I
o 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
Time (hours)
I
- - -I - - - -r -
I
... ... ......-.1..
I
.- ... -', -' .- -. -r
I
Subcatchment 1 S: SUB 1 TO DITCH
Hydrograph
'... .1ypeIl24-h r 190year.
.~~ ~ ~~:~ ~ ~ ~~ ~~ .~~ ~~:~~ ~ ~~~ ~ ~ -~ ~t~~ ~:~~~ ~ ~~.~t~. -,~:~ Rahlfarr~ 6:0n....~~
I I I ;
... : ... ...... ; ...' ..:....... ~ ..... ....;.:..:.~::: ::'RL.-rtoff'A'rea~'1 ~l~6(): ~L<:::
I I I
: --:- .....> ......L - -;'RunoffVolume=3~034af-
. .. m ".._ .." .!.... ... i... ... *. ...'... ... _... ..; ... ... ..._;.. ... ... ....;... ... ... ..: ... ... ... ..._ ... ... ...
: __~_u_______ . --t-R~n<?ffiDept~=~;81'''--
::.. ... ... m....... ... --c...... f-':~.C':::'::.':'...::'.:Flow'Length;i16t,.. ...
I I . . I I ' , , : , ,
- ; - - -- - - : - - - - - - ~ -. ' .~ ~ ~ ~ ~ ~ ~- ~ - - - - ~ ~ ~ ~ ~:~ - - - - ~ ~ ~Tc~2-3 :3J mT.i -
r . ... ... -'.i". I I ",::
-~ - - -;- - - ~- -- ~ - - -i- - - ~ ---~ -- -~ -- -:- -- ~- --~- - -:- - - ~ -- -~ - - -:CN=70--
I
... ......1...
I
I
...l..
I
...l.. .
I
...1..... .
I
L..
_."~"'-"'T-"'''':---'--'''r-'''-r- -"~--"'r
I I I ,
... r' - ... ... J'" ... ... ., ... -- ... r. ... - - 1- - - '"1 ... ... ~.- '!'" - ... -. r - - -'J - - ... T - ... ... r"- ... ...
,I I I
r" ... ... ... ... ... ... ..,.- ... ... ~..... ... ...... ... ... -; -..... n. ,.. .n. ... - ,""" - .. ....... -- ... .r". n. r..
I I I
... ..j - - - "!". - .... - J- ... - ..~ n. - .... ~. - - - ~.. - ... ....J... ... n. -+ - n. - t... ... n.
I I
1- Runoff~
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type 1/24-hr 100 year Rainfal/=6.00"
Page 38
8/31/2006
Subcatchment 2S: CENTER OF SITE
Runoff
109.37 cfs @ 12.03 hrs, Volume=
6.169 af, Depth= 3.09"
=
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 100 year Rainfall=6.00"
Area (ac)
3.210
2.180
1.200
0.320
0.690
16.370
23.970
CN Description
98 Rooftops
98 Roadway
98 Driveway
98 Sidewalk
98 Open water
61 > 75% Grass cover, Good, HSG B
73 Weighted Average
Tc
(min)
1.0
6.7
Slope Velocity Capacity Description
(fUft) (ft/sec) (cfs)
Length
(feet)
1.0
Direct Entry, Roof to yard
125 0.2600 0.3 Sheet Flow,
Grass: Dense n= 0.240 P2= 2.70"
125 0.0200 2.1 Shallow Concentrated Flow,
Grassed Waterway Kv= 15.0 fps
755 - 5.0 Direct Entry, Pipe flow @2 5 fps
1,005 Total
2.5
11.2
Subcatch'ment 2S: CENTER OF SITE
Hydrograph
120 : .. ", ... . . 'j ...
115," .:. ...:.
110~ ..,... ... ..,.. ... ...
I ; I
105 - ...,... ~ - . . r . . '1 . . .
100- - - f - - - ~ - - -: - - -
95 ~ .: ... 1... . .:
90': .. ... ..., ..., ...
BS: n.... ....: .. .." .... ... ... ..~...
BO- ...: ... .. . ' . ...: .
75 -.. .,. . . " . . . !.- . . ..J . . .
, ,
~ 70 .... ., ... . .. .., ...
~ 65 ....m ...:... n. n. n. ...... n. ..... :
;: 60~":' .. I.. ... ...:
~ 55- ... ....:. , ... -- ..~ . .. .
50" ... ... ....,. .. .. ... .... ... ... ..,.... .
45 ~ - i -- - i- - ... -: - - -
40~ ... ... ..,. . . '.. ... . .J ....
35 - ... ... ..:. . . + ... . ...: ....
j i ; I
30 . . ',' . . r . . , . . '1 . . .
25~ . . - . c... ..:. . .
20".
15,
10~
5 .
o ~ I' i .
o 5 10 15 20 25
I n. ... .... m m m "'1000 m ... ... m m ... .. no m m n. m ... m .... m m .n m _. n. n. n., ..
m m ... ...."_; I ... n.. n. ... I... ... ... n. ... ... .. ... ... ,...
, ,
... ... i... ..._ n. ...; .. .... ... .;., ... .... ... I... n. ... ''; ... ... .._1_. ... n. HO ... ... ... +_ ... ... ...;.... ... ""';' ...... u.. ... ... .... ... _n_ n.
, ,
= = .,. = = == = = + = ==:== == === ~ =J:YP~]~: 24;fit=t90 ~year= =
... .... ... ... . .. ..... ': . .:. . .' ... .... ..... :Ra i "fa 11.......li ~'OO ~I.... .
I I j
. . ... . . ... ..... ... ..., - .... ~. ;Runoff:Area~:231970 ac. .:
_ _ _ ,_ _ _ --' _ _ _ .:... _ _ _1_ _ _ ... _ _ _ i- _ _ _1_ _ _ .J. _ _ _ L _ _ _;_ _ _ .J. _ _ _ i- _ _ -l_ _ _ .... _ _ _
, ... ............. ... ...: .RurioffVbh.lme=~.-169af..
.... ... .... ... - ...1. .... ...: ..... . :.. ....i ..: , · :::Runoff :Dei;th':"3 j)g II'.:
... ... ... I... m m ..; ... m ... i_ ._ ... ...1... _. m .... ... _n. ... ;n m .... ._;... _. .m .., m ._ _., ;.. ... ... n.'._ m m .... .n m m
..... ", = = j = = = t =. ~:= = = j = = = t = = =:= f1J9~ J;~lJ.gJht-.1 ;'9.Q~I= =
, , I . . I . : ; . . . .
... ... .... .... ...: ... .... ... ... .": . ..... . .. ...' ... ...: .. .... ... ; ...:::r c~ 11: 2:m in'
: = =:: : = =::: = ~ : : =:= :: j = : : : = : .:. = :j = = = t : : =:: = : :: = = ::CN:: 73: =
; i
... on m .... m _. _.
,
... on ...1... m m ... .... m _ j.......... --1-....... ...; ... _ n. L ...._ _i... ... __ n: ... ... _. j._ _ ... ._.;_
, I
- - -i-"''''""1-'''''';-'''''' -I-"''''''''''''''''''!-'''''' -1-"'''' "'"!......... !""" -... -;-......"'"!... - -!-...... -i-"'''' + _......
....... ...1.......
,
---1-- 't-
I
... "'1'"
... ...1
,
,
r--'1---
i I
.n ... ... .. m, m
... on ... ..) .."
,
...... ...1...
,
L..._ .......i... _n ....l...
i' 'I I" . i '" " "I' I'
30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
Time (hours)
1- Runoffl
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type" 24-hr 100 year Rainfal/=6.00"
Page 39
8/31/2006
Subcatchment 3S: NE OFF-SITE
Runoff
10.12 cfs @ 12.00 hrs, Volume=
0.520 af, Depth= 3.09"
=
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 100 year Rainfall=6.00"
Area (ac)
0.110
0.390
0.040
0.090
1.390
2.020
CN Description
98 Rooftop
98 Roadway
98 Driveway
98 Sidewalk
61 > 75% Grass cover, Good, HSG B
73 Weighted Average
Tc
(min)
1.0
7.6
Length
(feet)
Slope Velocity Capacity Description
(ftlft) (ftlsec) (cfs)
0.2
Direct Entry, Roof to yard
Sheet Flow,
Grass: Dense n= 0.240 P2= 2.70"
70 0.0586
8.6
70 Total
Subcatchment 3S: NE OFF-SITE
Hydrograph
11 - - - -; - - - -+ - - - !- - - -:- - - -I - - - '!- - - ...!- - ... --; ... - ~ i- - - -:- - - -! - .~ - + - - - t- - - -; - - - of - - - ;- - - - i- - - -+ - - -
1
10...........T
1
1
9- ... ....: .
1
1
8- . ... ..1 ...
1
1
,
1
1
1
-------.-------'.---. --'l-'--r---"."---T-
.: _ .:JYR~IJ ?4~~r~Q~}f~~r_
: : Rainfall=6.00"
.... m ... m ~._ ._ ... ...' m ... _.. ... _. ... _. ;.. m ... ...!._ ... on .... ... ... m .;... ... ... m
Runoff Area=2~020 ac
---~--_._--_.._.__.t---~--_.._._-~-- ~-- --~---r-
Runoff Vblume=O.520 af
. I I :, "
_ _ """ ~." ~~~. ~- ~_~'__ __.'. _I X{~"~2ff'I?_~:p!~_-:-~._o~~-,:- -..
. . _. : Flow Length=70'
_ _I- _ _ _:_ _ _ -l_ _ _.:- _... _i_ _... -i _ _ _.;...... _ _;........ _ _,_ _ _..J. _ _ _I- _ _ _;_ _ _..... _ _ _ i- _ _ _;_ _ _ -' _ _ _... _ __
: : ! Tc=8.6'min
- :-- . .- -- : - -- , -- ",- -- ~ - - -, - "- r - --,- - - T" - ": -- -e" - - TU -, -. -:CN:": ij--
m:..... ..j... ..._~ ___.._m___.m.__..m :
1 1 1
1 1 1
_______.___m___~___~ mmmL ___._mm_m _m_mmm_mm___mm__
1
1
1
1
1
1
... "1 ... _. H' "
1
1
1
4 - - - -'" " - " -
1
,
...r........
1
1
,
1
1
1
..1..... ._..
1
1
1
.... ~..
1
1
1
_. r' H. H'
1
,
,
1
1
1
7
1
1
... m _..J m ._
1
1
1
m m ... .... m ... -"1'- H' H' _;.
1
1
1
...... n.... "1
1
~
.!:. 6:
~
o
u:: 5 --
1
1
1
"'-"-"i ...
1
1
2
70
3 "--
0, .
o
,
10
. . . . . . .
40
, .
75
- ,
30
, ". ,.
45 50 55
Time (hours)
,
60
,
65
,
80
,
85
','
90
,
95 100
15
20
25
35
L - Runoffl
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type 1/24-hr 100 year Rainfal/=6.00"
Page 40
8/31/2006
5ubcatchment 55: 5E OFF-05IlE
Runoff
0.951 af, Depth= 2.01"
=
7.96 cfs @ 12.35 hrs, Volume=
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 100 year Rainfall=6.00"
Area (ac)
0.150
0.680
4.860
5.690
CN Description
98 Rooftops
55 Woods, Good, HSG B
61 > 75% Grass cover, Good, HSG B
61 Weighted Average
Tc Length Slope Velocity Capacity Description
(min) (feet) (ftIft) (ftIsec) (cfs)
37.4 300 0.0200 0.1 Sheet Flow,
Grass: Dense n= 0.240 P2= 2.70"
5ubcatchment 55: 5E OFF-05IlE
Hydrograph
8
I
I
I
---1-- ~---~---I---~---~---I---~-
I
I
I
I
.... ...... "'I'"
I
I
I
I Ii!
- .- - - -1- - - i - ... - ,- ... ...
I
I
I
m ... ...1... ... ... H.
I
I
I
I
... ... m ...1
I
I
I
I
... ;.... 'm _. _I... n' ... ... ... 'm _. 1-. ... .... - i _ ._ .m _! _
7
I I
Typ:e II 24-ht 190 ye~r
m ... .. , . - ., .. - .... ... .... .. ... ...... - .. ... .. R~iin'fall... 6.00" ...
I... ;
- -; - - - ~ - - -:- - -: - -Runoff -Area'-5:690-ac-
t ,
. ....Runoff Vblume=O.951m af ...
, . ' - I ; , , ,
Runoff bepth=2.01"
... ... ....,_.. ... on _.,. .... ... no 1-.. .... ... .....n .... .." .+ .... .... .." ,.. _.. _. _.: m ,... ...
Flow Lehgth='300'
i I . . , .
... m m m ... ... .. m m ... :Tc;=37.4im in ..
. . .
.. ..:,CN=61
, . .
6 - - - -: - - - ~ -
:F 5
~
1
t
..... n' ...i...... ..._.__.1..
I
1
1
1
... m ;... _. _. n.;.n _ ".' .... n' _.. .... ~ _
I
I
1
1
.. on ... ... on on ... .... - ... ... ... r" ~.
1 1
I 1
I ,
1_...___....____... __1___:"__
, 1
, I
1 I
t I
.....1
,
1
. . .
... .... - ,.. ... ~. -.'.- - ~.. .~
i:
~ 4 ... ... ..... ... ..."..
I
1
...1
1
I
1
1
_.1... ..- .-.
1
1
I
I
3 -
2 ....
1
1
I
1
1
I
... on .... L.
I
I
1
t
__ _ _ L _ _ _, _ _ ._ .;.
o
o
'" .
5
,
25
. ,
80
. ,
85
., .
90
, .
95 100
,
40
,.
45 50 55
Time (hours)
10
15
20
30
35
60
65
70
75
1- RunOffl
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type 1/24-hr 100 year Rainfal/=6.00"
Page 41
8/31/2006
Subcatchment 6S: SW SUB
Runoff
=
26.21 cfs @ 12.01 hrs, Volume=
1.376 af, Depth= 3.28"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 100 year Rainfall=6.00"
Area (ac)
0.110
1.100
0.092
0.250
0.370
3.108
5.030
CN Description
98 Rooftop
98 Roadway
98 Driveway
98 Sidewalk
98 Open water
61 > 75% Grass cover, Good, HSG B
75 Weighted Average
Tc
(min)
1.0
5.7
Length
(feet)
Slope Velocity Capacity
(ftlft) (ftlsec) (cfs)
Description
40 0.0400 0.1
Direct Entry, Roof to yard
Sheet Flow,
Grass: Dense n= 0.240 P2= 2.70"
Direct Entry, Pipe flow ~ 5 fps
2.4
9.1
705 5.0
745 Total
Subcatchment 6S: SW SUB
Hydrograph
28
I I i
... i-' - ~~ 'l - - !' - ... - r ... ... -j'" ... ... "T ... ... ... ,-- ... m "-, m. ... ... 7" -. ... - .-- -- .. _ - -., - -. ..
I I
; I )
-- ---------- ---------- ----
I I
.... --- - ---:...1y~eJ'.24~hr- t~Oyear
, I. ...:. -:-Rainfall=6~OO'~
Ii!
.. '..... .,.....'... RUnoffArea=S.030ac.....
m f- ... ... _i_ ... ... -l ... ... ... .;.. ... ... _im ... ... -i _ ... _ .;..- _ ... ... i-- ... ... -i... ... ... 4- ... ... ... f- ... ... _i... ... ... ...l- ... ... ... i- ... ... _1_ _ ... .... ... - ... .... - - -
. . Runoff Volume=1.376 af
... .u. ... ..' ... M'_ ,.. ... ... .... .", .." .." -4 ... ,". "." t... ... "." . . .. . .. .. u' "." '..
. -~ - - -:- - - J - - - ~- --:-- - J.- -~ -- -~. - .:. -- i-Runoff ~De'pth=3.-28'! --
I ! Ii; i i ; i I I ; ; ! ! !
- - T - -~ - ._~ - - -,- - - ~ - --~. --:--.~ _..~ --.~. - .:. - - ~ -. -:Flo'w ~I:.en' -gt'h-'74 S'. ..1._
! I I : I , , ! , , , I I , : ' , ,
I I I !
. ....: ... .: - . . ... .... "') ... _ ... . . _ _ ... . .~ :.. .... : ... . . ...: ~T~=:=~ ..1.: ~i~ _ .
6 -. ...... ...l : .... .... ..._ J ........." .... ... _ -' ... _..... __" _ _... ..:.. _~_ _ _. _ _ _.... _... .:CN::::'7S ...
I I I I I
I I I I I
4 . ... ...'. . . .1. .. . l.. . ..1. _ .. .. .. .. ._ .. ... .. ... .' _ _ .. .. _ _.' _ .. ..J .. . .. l..
I I I I I
I I I I I I
2 ... _. -; - ... ..- .j. ~.. l.. ... ... ...1 _ ..! ... ... ... .J. ... n. _.. L.. ! . _ _. ..
1 I I I I I
I I I I
26 ... ... ... .. ... ... .~
I
24 . - .... - -' ~ ...
I
.._... ... ..I....
I
I
I
.....'l"--r"
I
I
. .. "'1"
I
I
... ... ~I
I
... ... ..., d. ..! ... ... ... .1.. ... .... ... ; ... ... .... .j ... ... .... L ... ... .... L ... ._
I
I
I . . .
...... ........... ....,.-... ... ...,....... ...--'
I
I
22
20
18
~ 16
.e
== 14
0
u:
12
10
8
I
n. . "'f'
I
I
... - j- ... ...
I
. ...1...
I
I
m_.. ..!.... .._..l.. . ._l..
I
I
I
I
----:---....-
I
I
... ........ ... ... -+
I
I
- - --!- - - -t-
I
I
I
...1...
I
I
.. ..~ ... .... ... ... - .... ... !...
0', .
o
. 'l'
5
,
80
90
. 'l'
95
. .,
10
.,.
25
. ,
35
, .
40
.';' I
45 50 55
Time (hours)
15
70
75
85
20
30
60
65
1- Runoffl
100
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type 1/24-hr 100 year Rainfal/=6.00"
Page 42
8/31/2006
Subcatchment 7S: SE SUB
Runoff
1.749 af, Depth= 2.99"
=
31.20 cfs @ 12.03 hrs, Volume=
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 100 year Rainfall=6.00"
Area (ac)
0.690
0.710
0.280
0.100
0.360
4.870
7.010
CN Description
98 Rooftop
98 Roadway
98 Driveway
98 Sidewalk
98 Open water
61 > 75% Grass cover, Good, HSG B
72 Weighted Average
Tc Length Slope Velocity Capacity Description
(min) (feet) (ftlft) (ftlsec) (cfs)
8.5 55 0.0270 0.1 Sheet Flow,
Grass: Dense n= 0.240 P2= 2.70"
1.3 160 0.0200 2.1 Shallow Concentrated Flow,
Grassed Waterway Kv= 15.0 fps
1.1 345 5.0 Direct Entry, Pipe flow @2 5 fps
11.0 560 Total
Subcatchment 7S: SE SUB
Hydrograph
34
32
... ... -t _n.... no I- ....... -i-- n.. - "1 .. .. ... .-... .- :...
I
_ m '... ... _ ..! _ m. .n 1. .n m. no i._
I ,
I I
... .. - r- - .n -,- - ... -I ..
I I
... l.. .... no ...:... ... no ..J ..
I I
I I
.. r 0- n. ... I
I I
---~---~---~"'-~---'1---~--~---7---
I I
m no ....... .n _ .... ... .n n. ..._' n. n. I I
I I
I I
....' r~. .~.I ~:J ~ ~ ~ [~~ ~:~ ~ ~}~ ~.. JYR~ JI: ~4~~ r:JQ9 y~~~t,'
... ..,' ..., ,.. '" .... , . ... ...: .. ... : . ": .Ra i n fa II = 6.0 O'~ ... ..
I I I
. -: -- -:- -- ~- -. r' - -:- - - :-- -r -- -: -. -I" Runoff A rea:': 7lU to- ~fc--
_~... __ ______ ______~___--- ___~- _.(.m___...__...... ...___,__...._...___...__.
..... mm m,'.. ...: m "I' ... .~".. ... m m.. m m ...., ...'...RunoffVbhjme=1~749af
I I I I I . : . , . .
...__ _L___,___.J_.__.L_._.' , ., .I l ' , . . ,
_ _ _ _ _ _ ~ _ . _~ _ _ __ _ _ ~_ _ _,' _:' ~~~~~~I ~~~~ ~ ~., ~ ~+ J~:y~ri~ff~O_e~t~.~~.:99'~::
: m~'.'. .:.,.: .... m~.. '.',": - - -. - -.; m - ..,., ~ m - - 'Flowtength='560" m
12 ' I I , I' ;:;; I I , , , : : ,
10-' - - -: ::: .: ~:: ~,~::::: ~:: : .:. ~:: ~ ~ ~ I ~ ~ ~:~ ~ ~~': ~ ~:: ~ ~ ~ ~ ~~: ~: ~ :fc,: ]:1 :0: mrr1~:
I I ! I I! !! I I ; ; ! ! ; ,
- -~ - -~ - - -'- -- ~- - - ~ - - -:- - - ~-- -~ -- -;- - - -;- - - ~ - - -:- - - -:- - -~ - - _L - - -:G.N=("-2--
I I I I I
._,- - ~,. '1" - r - - -',-' ... ... '.1 ... -. .-.- -. .- _. .... -. ...... .r -. -- r.'
I I I I I
... ...' ... .. ... ..j. _ ._ l._ _ _ _!_ _ _. _~ m _. ...i _ _ _. ... _ _ ._.;._ ._ ... ....: ... m ... ,4 ... ._ ... I_
I I I I I
I I I I
1 ......,--- -"'-:'--"---"'Tm_-~--
, , I
,
I
_. - ._. I
,
...... ... J.
I
26 "r".
,
24' -. -I - - - ~ .
I
..! ..
I
I
30,
28
22
'iil 20.
~ 18'
:;:
~ 16.
14'
8,
6.
4'
2
0', .
o
85
., .
90
I. 'I
95 100
,
25
:. "". I' 'i' 'i' I
35 40 45 50 55 60
Time (hours)
,
65
,
70
15
20
30
75
80
1- Runoffl
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 100 year Rainfal/=6.00"
Page 43
8/31/2006
Subcatchment 8S: SUB 8 OFF-SITE
Runoff
0.157 af, Depth= 2.01"
=
2.39 cfs @ 12.08 hrs, Volume=
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 100 year Rainfall=6.00"
Area (ac)
0.940
CN Description
61 > 75% Grass cover, Good, HSG B
Tc
(min)
1.0
13.6
Slope Velocity Capacity Description
(ftIft) (ftIsec) (cfs)
Length
(feet)
85 0.0200
0.1
Direct Entry, Roof to yard
Sheet Flow,
Grass: Dense n= 0.240 P2= 2.70"
14.6
85 Total
Subcatchment 8S: SUB 8 OFF-SITE
Hydrograph
2-
. .
. .
. .
.. ._ __ - ._ _. M' .......
1;yp,e I~ 24-ht 190 year
-. - - - - ... '. -;Rai n'fall=6~00'~ m
I ! !
Runoff Area;-01940 ac
I
Runoff Volume=0.157 af
. . . . i - ,
: Runoff pept~=~.01"
.., m ... ..'. flow _Lengtb. 85~.
I . . . .
:Tc~1 ~.6: min
. . .
:CN=61
. . .
~
~
,
,
I
I
I
I
I
I
I I
!. d. ... m l.. _. ... _! ~ _ ._ ...:._ _
I I
I I
I I
I I
I I
I I
I I
I I
I I
I I
I
::
o
u:
95 100
1 ---
o
o 5
",' 1 I
35 40 45 50 55 60 65 70 75
Time (hours)
1- Runoffi
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 100 year Rainfal/=6.00"
Page 44
8/31/2006
Subcatchment 95: SUB MIT AREA
Runoff
=
11.38 cfs @ 11.93 hrs, Volume=
0.462 af, Depth= 3.18"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 100 year Rainfall=6.00"
Area (ac)
0.620
0.640
0.480
1.740
CN Description
61 > 75% Grass cover, Good, HSG B
77 Woods, Good, HSG D
85 Mitigation Wetland
74 Weighted Average
Tc
(min)
2.0
Length
(feet)
230
Slope
(ftIft)
0.3300
Velocity
(ftIsec)
1.9
Capacity
(cfs)
Description
Lag/eN Method, AS
Subcatchment 95: SUB MIT AREA
Hydrograph
12 - - - - -
, ,
m"'-i--'--I- ...
, ,
I I
.. ......'... ... .....t ... ......f..
, I
I I
9- on ... ...: on ... _, .J ... .. ... I.. .. ... ....1._ ... _.. --' ...
I I
I
11
10
~ 7
~
I
I
I
... ... m .. ... "." -r
,
,
~ 6 -
u:
on ...:___......_
I
... 1.- ...
I
I
I
no.. "r""
I
._ .n on! .n __ n' .in ...
, ,
I
,
m ".. ."
,
5 u
4
2-
60
0, '
o
'j '.. I'
15 20
. . . I .
40
"
65
, ,
70
I " .'
45 50 55
Time (hours)
25
30
35
75
80
1- RUnOffl
100
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type" 24-hr 100 year Rainfal/=6.00"
Page 45
8/31/2006
Inflow Area =
Inflow =
Outflow =
Primary =
Pond 2P: NORTH POND
23.970 ac, Inflow Depth = 3.09"
109.37 cfs @ 12.03 hrs, Volume=
11.16 cfs @ 12.61 hrs, Volume=
11.16 cfs @ 12.61 hrs, Volume=
for 1 00 year event
6.169 af
6.150 af, Atten= 90%, Lag= 34.8 min
6.150 af
Routing by Sim-Route method, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Starting Elev= 866.50' Surf.Area= 0.690 ac Storage= 2.820 af
Peak Elev=870.0T @ 12.61 hrs Surf.Area= 0.961 ac Storage= 5.753 af (2.933 af above start)
Plug-Flow detention time= 481.7 min calculated for 3.330 af (54% of inflow)
Center-of-Mass del. time= 184.6 min ( 1,017.4 - 832.8 )
#
1
Invert
857.00'
Elevation
(feet)
857.00
858.00
860.00
862.00
864.00
866.00
866.50
868.00
870.00
870.50
# Routing
1 Primary
2 Device 1
Avail.Storage Storage Description
6.183 af Custom Stage Data (Prismatic) Listed below
Surf.Area
(acres)
0.010
0.140
0.210
0.280
0.370
0.570
0.690
0.800
0.950
1.030
Inc.Store
(acre-feet)
0.000
0.075
0.350
0.490
0.650
0.940
0.315
1.118
1.750.
0.495
Cum.Store
( acre-feet)
0.000
0.075
0.425
0.915
1.565
2.505 -
2.820
3.938
5.688
6.183
Invert Outlet Devices
866.50' 18.0" x 20.9' long Culvert RCP, sq.cut end projecting, Ke= 0.500
Outlet Invert= 866.30' S= 0.0096 'f n= 0.013 Cc= 0.900
864.00' 15.0" x 30.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500
Outlet Invert= 864.30' S= -0.0100 'f n= 0.013 Cc= 0.900
Primary OutFlow Max=11.16 cfs @ 12.61 hrs HW=870.0T (Free Discharge)
L1 =Culvert (Passes 11.16 cfs of 14.28 cfs potential flow)
L2=Culvert (Inlet Controls 11.16 cfs @ 9.1 fps)
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sin 000744 @ 1986-2003 Applied Microcomputer Systems
Type" 24-hr 100 year Rainfal/=6.00"
Page 46
8/31/2006
Pond 2P: NORTH POND
Hydrograph
~
~
120
115
110
105
100
95
90,
85
80
75:
70'
65;
60
55
50
45
40'
35
30~
25
20
15
10
5-
o
o
... ... _. L
,
..... "j
.... on ml_
n ...1...
,
- - -I-
I
"'1- - - "!"' -
! ;
;- - - ..... - - - '- - ... -1- ... - + - - - i- ... - ....; - ... - +-- ... - -,- - ... ...;. - - - ;.... - - -! - - - .f- - - -;- - - .... - - - ;.... - - -1- - -
I J i I
= = -,- = = I:::::' :.:.~ =:, - = = hlfli;fw, Area;:23~ 970 a,c- =.
..: = = =: = = =:= = =; P~ak=EleV=87Q.07i: =.
. ~~~,~ ~ ~ T~ ~ =i=~ ~1== ~ t=~ =!==~! ==~'~ =~j ===t ~==:~ ==~.~ ~SjQr~g~~~~t~~=~f=.
I
.. ... .hl
I
. m _'1_ ...
on ._ _1._ ... ... 1- ... 'M . ,
I
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I
on on "'1__ .
I
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I
mtm
L ... ... _.1_ .M ... .... H.
I
... f"
~
o
i:i:
_ ... 1_ ... ... .... ... ... ... ;.... ... ... _1_ ... ... ..L ... _ ... '- ... _ ..... ... _ ... .;... ... ... _;_ ... ... ... ... ... ... ...... ... ... --i... ... ... .0.- ... ... ...;_ ... ... ,J ... ... ... i- ... ... _1_ ... _
I
on -l ,..
...1.._... H'
I
"'1"
I
,
I ; ;
------------
I
mi...
....M _I___.i. on
I
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I
"""1m
. . .
'M ...,.__... ..,__....... m""
I
"- -. --l.-'-'
I
... on _. ~.. _I - - -
; ; I
--------------
. I
'.. ... .... ...1.-
I
00' 00.00'.. """'00'1
I
- - -; - - - ~ ... - -, - - -
i i ; i
----------------
; ; ; ;
----------------
... ... ....'... ... ... .J. ... ... ... '.. ... ... ..,
....... ...1
I
"'1'-
I
- - - -: - - - :- - - -1- - - ..,.. - - -.- - - -: - - - -:- - -
.i_.... _ L.__ _.1..._... _. ____'... .__...1... __1._
I
. . .
----------------
, , , .
.J _ _ _ L _ ... ..1 _ _ _ i. ... ... ... 1_ _. _. j _. _. ... L. ... _.
;
10
',.
30
"
35
"
25
"!' I" i
40 45 50 55 60
Time (hours)
., .
75
80
85
"I 'I
90 95 100
. ,
20
.. ,
65 70
5
15
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAO@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 100 year Rainfal/=6.00"
Page 47
8/31/2006
Inflow Area =
Inflow =
Outflow =
Primary =
Pond 6P: SW POND
12.040 ac, Inflow Depth = 3.11"
29.59 cfs @ 12.02 hrs, Volume=
6.77 cfs @ 12.97 hrs, Volume=
6.77 cfs @ 12.97 hrs, Volume=
for 100 year event
3.119 af
3.112 af, Atten= 77%, Lag= 57.6 min
3.112 af
Routing by Sim-Route method, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Starting Elev= 917.50' Surf.Area= 0.369 ac Storage= 1.436 af
Peak Elev= 919.44' @ 12.97 hrs Surf.Area= 0.445 ac Storage= 2.240 af (0.803 af above start)
Plug-Flow detention time= 461.5 min calculated for 1.675 af (54% of inflow)
Center-of-Mass del. time= 109.9 min (1,014.7 - 904.8)
#
1
Invert
909.00'
Avail.Storage Storage Description
2.730 af Custom Stage Data (Prismatic) Listed below
Elevation Surf.Area
(feet) (acres)
909.00 0.010
910.00 0.084
912.00 0.128
914.00 0.179
916.00 0.237
917.50 0.369
918.00 0.388
920.00 0.467
920.50 0.531
# Routing Invert
1 Primary 917.50'
2 Device 1 915.00'
Inc.Store
(acre-feet)
0.000
0.047
0.212
0.307
0.416
0.455
0.189
0.855
0.250
Cum. Store
(acre-feet)
0.000
0.047
0.259
0.566
0.982
1.436
1.626
2.481
2.730
Outlet Devices
15.0" x 15.5' long Culvert RCP, sq.cut end projecting, Ke= 0.500
Outlet Invert= 916.50' S= 0.0645 'f n= 0.013 Cc= 0.900
15.0" x 27.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500
Outlet Invert= 915.27' S= -0.0100 'I' n= 0.013 Cc= 0.900
Primary OutFlow Max=6.77 cfs @ 12.97 hrs HW=919.44' (Free Discharge)
L1=Culvert (Inlet Controls 6.77 cfs @ 5.5 fps)
L2=Culvert (Passes 6.77 cfs of 8.22 cfs potential flow)
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type 1/ 24-hr 100 year Rainfal/=6.00"
Page 48
8/31/2006
32
30
28
26
24
22-
20
~ 18
~
~ 16-
0
u:: 14
Pond 6P: SW POND
Hydrograph
'... ... ... J. ... ... .......
I
I
OM T"
I
. .J.
I
I
"'-"-"1-'
I
... ... ..; n. ... ... .1... no ... L._.
... J. no ... on I... .n..
I I
I I
ml_ on
I I
.- - -;- - - ~ -. -~ - - -:- - -7 - --:-- -~-- - ~ - - -:- - - ~- -lhflb1l\t Area=12:040-ac--
: I I I I: ::,;'::::"
"';'" ... - '-I . ". ... "-1--' - ... ~ -- ... ..- ... --: ... - ... ... no , '._ ..,; ..' ... u_ + ... .n -. ;-.. ... ... ""'! ... 'n ... !"' ... ... --,'''' ... ... 'of ... ... ...
....._:.: I I...., ........ .: :PeakElev=919.44'..
. L ~H': t n :;: ... ... .. . . : t - :$~~r~~r~~~ j~~~:~~ ..
I I I I I I
... -4 . j.... ..._, no .', _, + ... 1_ no .... ... + . ... ... - ... .
I I I I I I
1 I I I I I
---'---1- --.r----;-.--T---I~-- -,---r .....hi---
I I I I I I
... ... ..., _. ... ... .~.. ..... L.. ... ..., 0_ ....L '.' no. ... 1_ ... ..i ..' ..' ... ..l . ..J ... ... ...
I I I I I
12------------r---~---~---:---~---T-- --~---+---~---~---T---~--'---r-- --~---
I I 1 I t
. ... l.. ... L ... ... ...1.... _ ... ..'.h ... ... ~ .... _. .. L.. ... ... ...: _ _ _ 1 _ _ _ I. .J. _. _ _ 'm m ... _1 ._ ... ... o. ... ... ...'... ... _ ..t .... _ _
I I 1 I
1 I I I
- -; - - - T - - -1- - - -; - - - :- - - - ~- - - -; - - - T - - - i- - - -; - - - T - - - t- - ... , - - - r - - -;- - - "l - - -
I 1 I I r
L___.___l___L__~___~__ __~___l___L__~___l___L__J___L__ __~___
1 1 I I
I I I
---'---T "'_"""''''_4.
I I I
I I I
..............j. I ...-.. ...--- ....-1-.-..
I I
10 ...'-
8
6
4-
2
0 ,
0
,
15
"
30
',.
35
;" . 'I
45 50 55
Time (hours)
"
75
, '
80
,
85
"
90
'I 'I
95 100
,
20
65
,
70
10
25
40
60
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type" 24-hr 100 year Rainfal/=6.00"
Page 49
8/31/2006
Inflow Area =
Inflow =
Outflow =
Primary =
Pond 7P: SE POND
7.010 ac, Inflow Depth = 2.99"
31.20 cfs @ 12.03 hrs, Volume=
5.86 cfs @ 12.34 hrs, Volume=
5.86 cfs @ 12.34 hrs, Volume=
for 100 year event
1.749 af
1.743 af, Atten= 81%, Lag= 18.4 min
1.743 af
Routing by Sim-Route method, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Starting Elev= 921.50' Surf.Area= 0.373 ac Storage= 1.365 af
Peak Elev= 923.11' @ 12.34 hrs Surf.Area= 0.493 ac Storage= 2.092 af (0.727 af above start)
Plug-Flow detention time= 739.1 min calculated for 0.378 af (22% of inflow)
Center-of-Mass det. time= 131.8 min (966.8 - 835.0)
#
1
Invert
913.00'
Avail.Storage Storage Description
2.524 af Custom Stage Data (Prismatic) Listed below
Elevation Surf.Area
(feet) (acres)
913.00 0.010
914.00 0.072
916.00 0.115
918.00 0.170
920.00 0.230
921.50 0.373
922.00 0.393
924.00 0.574
# Routing Invert
1 Primary 921.50'
2 Device 1 919.50'
Inc.Store
(acre-feet)
0.000
0.041
0.187
0.285
0.400
0.452
0.191
0.967
Cum.Store
(acre-feet)
0.000
0.041
0.228
0.513
0.913
1.365
1.557
2.524
Outlet Devices
15.0" x 40.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500
Outlet Invert= 921.00' S= 0.0125 'f n= 0.013 Cc= 0.900
15.0" x 23.5' long Culvert RCP, sq.cut end projecting, Ke= 0.500
Outlet Invert= 921.50' S= -0.0851'f n= 0.013 Cc= 0.900
Primary OutFlow Max=5.86 cfs @ 12.34 hrs HW=923.11' TW=919.28' (Dynamic Tailwater)
L1=Culvert (Controls 5.86 cfs)
L2=Culvert (Inlet Controls 5.86 cfs @ 4.8 fps) .
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 100 year Rainfal/=6.00"
Page 50
8/31/2006
34
32
30
28
26
24
22
., 20
~ 18
;:
0 16
ii:
14-
12
10.
8
6
Pond 7P: SE POND
Hydrograph
-~---~---:-------+---
. . . .
.... :._ ... ... ..... ... _ ... t- ... ... _,_ ... ...
. . .
-'--~---~---~---~---I--
I
,
I
I
. ~ ~ _ ~ ~:~ ~ ~ ~~ ~ ~:~ ~ ~ J~ ~ ~ I ~ ~ ~,~ ~ ~ ~~ lrlflow~ATre~a~:Z:D1~U ~a~c~ ~
,
..F;>>eak ;Elev;:923~tt.
... ... .u :... ... ... ..~ ... ... ... t.. -. ... ..., ... ... m "f
mjStor~g:e~2~.092m .~f
,
--~---'---~---T--
, I I
-~---I---~ __~___!___~___~___
I I
___I___J... ___ ______1__
I . I
I I I I I
~ ... I" ... ... -!... ... ... t ... ... -1- ... ... ""1 ... ... ... T ... ... ... 1m ... ... -; ... ... ... T ... ... ... 1m ... ... --; ... ... ... T ... ... ... 1- ... ... -;- ... - ... ;- ... ... -1- ... ... .., ... ... ...
I J I I I
.. n. ...1... ... ... .t. I... 1. ... '._ _. . ._... _. L ... .... ...im m .....J
I I ) I
t I I I
... r ... ... -,- ... ... T ...... 1m... ... ..,... ... ... T ... ... ... ,m ... ... -: - ... ... T ... - ... ,- ... ... -'''' ... ... T ... ... ... ,m - ... -; ... ... ... ;- ... ... -1- ... ... ., ... ... ...
I I I I I
L _~___~_ ..._____ .~_
I I I
I I
- - I' _. .... ... ... - .. - - -, .., .... "'I
I
~ _ _ _, _ _ _ .1 _
I
I
.. "i
I
... ... -'- - .... "1 .
I
- - .!..
I
I
.,
I
.. ....... _ _. .J
I
I
.., 1-.
I
I
.. "'1".
I
......1..
I
I
I
I
I
.. ..t..
I
i"
I
......1..
I
I
no I"
..1.
I
l.
I
I
- - - -i - - - "1 -
I
4- -
2
0"
o
','
10
,
15
5
.. ...,._,...... __,_ _ _J...n _ n.
I
I
... '- - - ..!
."1 -
I
I
- .... - (..
I
'" "'I",
I
I
I
I
"'1
I I
L ,_ ,., ...1."
I ,
, I
-. .n T - - - ,- _.
.. ."t.-
I
" .i. ... _ ~,. ~" .. _ _ _ _.. _ _ _,_ ... on .J ..
I
I
-.--"'~---r---'----i-
I
.- ... ~
I
I
... T
I
... .n +-..
I
I
I
I
r'
I
,. ....M t'
I
.,.
I
I
- -I' - -.
I
'" -... 1" - -. -. ,.'.
I
..0.__.._.L ___I_
I
. . .
.M.;. ... _ ._.:_ _ .n _~..,
- ... j., ...
- n. _I ,
,
20
, ,.
25
.,
85
I'
95 100
" '
90
"
30
. I.
65
,.
75
70
80
35
45 50 55
Time (hours)
60
40
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type 1/24-hr 100 year Rainfal/=6.00"
Page 51
8/31/2006
Inflow Area =
Inflow =
Outflow =
Primary =
Pond 9P: MITIGATION AREA #1
1.740 ac, Inflow Depth = 3.18"
11.38 cfs @ 11.93 hrs, Volume=
0.50 cfs @ 13.05 hrs, Volume=
0.50 cfs @ 13.05 hrs, Volume=
for 100 year event
0.462 af
0.457 af, Atten= 96%, Lag= 67.5 min
0.457 af
Routing by Sim-Route method, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Starting Elev= 865.10' Surf.Area= 0.970 ac Storage= 0.526 af
Peak Elev= 865.17' @ 13.05 hrs Surf.Area= 1.439 ac Storage= 0.781 af (0.256 af above start)
Plug-Flow detention time= (not calculated)
Center-of-Mass det. time= (not calculated)
#
1
Invert
863.00'
Elevation
(feet)
863.00
864.00
865.00
866.00
# Routing
1 Primary
Avail.Storage Storage Description
3.811 af Custom Stage Data (Prismatic) Listed below
Surf.Area
(acres)
0.001
0.010
0.300
7.000
Inc.Store
(acre-feet)
0.000
0.006
0.155
3.650
Cum.Store
(acre-feet)
0.000
0.006
0.161
3.811
Invert Outlet Devices
865.10' 10.0' long x 20.0' breadth Broad-Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63
Primary OutFlow Max=0.50 cfs @ 13.05 hrs HW=865.17' (Free Discharge)
L1=Broad-Crested Rectangular Weir (Weir Controls 0.50 cfs @ 0.7 fps)
PROPOSED 9-01-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 100 year Rainfal/=6.00"
Page 52
8/31/2006
~
~
~
o
u:
12
Pond 9P: MITIGATION AREA #1
Hydrograph
I
m l.
I
I
I
I
hi_... _1._... ...'..
I
I
... _... :- ... - _,m........, ... n'",
I
I
6 -......~;............. - ~ ... L. ... ... _1_ ... ... J.. ... ... ... 1_ ... ... -i ... ... _ .;... ... ... ... ,_ ... ... ..J ... ... ... J.. ... ... ... 1m ... ... -i ... ... ... .... ... ... ... 1m _ _ 4 _ ... _ i-- ... ... _,_ ... ... J ... ... ...
11
10
8
I
I
m m .!.
I
I
I
I
I
.. ._ 1_- m. _.
I
I
I
7
5
I
I I
}. ....~..
I I
I I
I I
--r"
I
I
4
I
I
... 'f.
I
I
2 ~ - - -' - - - 1 ~
I
I
3
.. -. ~- - ... -;... ... ... .,.
I
...1...
I
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I
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I
I
... ... "'1-"
I
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, , '
, '
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I
I
'---;...'" -...;_... -+-...-:
I
I
__L___:___~___I___~___i___L__~___L__
I I I
I I I
I I I
". ... ... T n. n. "'1-" ... m ... .... ... T
I I I
I I
o
o
I'
5
I
10
15
"
20
I
I
0., .
I
I
.,j... _._-
I
I
... ... ...'... ... _ 1.. ... ... ... 'm ... ... J ... ... ... L. ... _ _'m ... ... .J ... ... ...
" I
25 30
.' j' 'I
45 50 55
Time (hours)
70
'l'
35
, "
65
60
40
','
75
80
'i'
85
I
I
I
. "f"
I
I
,
90 95 100
Subcatchment 2
~t~61 l~eac61 A ~
Subcatchment 1
CITY OF CHANHASSEN
RECEIVED
SEP 0 1 2006
CHANHASSEN PLANNING DEPT
Subcatchment 3
Drainage Diagram for EXISTING 1-16-06
Prepared by James R. Hill, Inc. 8/31/2006
HydroCAD<B> 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
EXISTING 1-16-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sin 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 2 year Rainfal/=2.70"
Page 2
8/31/2006
Time span=0.00-100.00 hrs, dt=0.01 hrs, 10001 points
Runoff by SCS TR-20 method, UH=SCS
Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
5ubcatchment 15: 5ubcatchment 1 Runoff Area=33.030 ac Runoff Depth=0.87"
Flow Length=2,440' Tc=20.3 min CN=?? Runoff=29.94 cfs 2.391 af
5ubcatchment 25: 5ubcatchment 2 Runoff Area=2.800 ac Runoff Depth=0.92"
Flow Length=315' Tc=5.7 min CN=78 Runoff=4.64 cfs 0.215 af
5ubcatchment 35: 5ubcatchment 3 Runoff Area=24.950 ac Runoff Depth=0.87"
Flow Length=1,180' Tc=14.6 min CN=?? Runoff=27.36 cfs 1.806 af
Total Runoff Area = 60.780 ac Runoff Volume = 4.412 af Average Runoff Depth = 0.87"
EXISTING 1-16-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 2 year Rainfal/=2.70"
Page 3
8/31/2006
Subcatchment 1 S: Subcatchment 1
Runoff
2.391 af, Depth= 0.87"
=
29.94 cfs @ 12.15 hrs, Volume=
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 2 year Rainfall=2.70"
Area (a c)
2.790
5.170
0.980
24.090
33.030
CN Description
61 Pasture/grassland/range, Good, HSG B
85 Wetland
55 Woods, Good, HSG B
78 Row crops, strai~ht row, Good, HSG B
77 Weighted Average
Tc Length Slope Velocity Capacity Description
(min) (feet) (ftlft) (ftlsec) (cfs)
20.3 2,440 0.1220 2.0 Lag/eN Method,
Subcatchment 1S: Subcatchment 1
Hydrograph
,
... _.._ ... - - __ h.
,
, ,
l---r---~---~---"r-'--r
, ,
32
30 - - - -.- - - ~-
_ i.... _ _ _i_ ~ _ .J _ _ _ L _ _ _ ,_ _ _ -' _ _ _ L _ _ _:.... _ _ _, _ _ _ ..l. _ _ _ t.... _ _ _, _ _ _ ..... _ _ _ j..... _ _ _;_ _ _
28. - - - -,- - - ~-
,
26
24
22
20-
~ 18
~
== 16
0
i.i: 14
12
10:
...... .,.
,
,
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,
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,
,
,
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,
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,
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I
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,
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on ... 1 n. ... on t....
, I
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I
,
,
.. ....... '"-0"' ..;'.
m:CN=77
. . . . .
. . . . .
. . . . .
-------------------
4
2 --
__~---~---~---;---+-__~_--I---+---~---i---~-------
0,
o
. ,
15 20
,., ;' " j'
40 45 50 55
Time (hours)
10
25 30 35
60
65
95 100
1- RUnOffl
EXISTING 1-16-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 2 year Rainfal/=2.70"
Page 4
8/31/2006
Subcatchment 2S: Subcatchment 2
Runoff
0.215 af, Depth= 0.92"
=
4.64 cfs @ 11.98 hrs, Volume=
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 2 year Rainfall=2.70"
Area (ac)
2.640
0.160
2.800
CN Description
78 Row crops, straight row, Good, HSG B
85 Wetland
78 Weighted Average
Tc
(min)
5.7
Description
Length
(feet)
315
Slope
(ftlft)
0.0555
Velocity
(ftlsec)
0.9
Capacity
(cfs)
Lag/CN Method,
Subcatchment 2S: Subcatchment 2
Hydrograph
5 -
Ul
~
_.._._._ n' ___... ___.._1... ____. _ .______ _ _.h _ n.
I
I
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I
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on 1_ ~ - -I - - - - ...
I I
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3 .-----------------~---~----------~ -
I
I
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Typ~ II: 2~-hr: 2 year
-: - - -,- - - ;Rairt'fall=2~ 70" ..
I
: R.unoff Afea'-2.80Q ac
I I
-Runoff Vol~me=Q;215- c;tf --
: Runoff pepth=O,.92"
2 - - -:- - _1_ - - ~ - - -:- - -1- - -:- - - _:- - - ~ - - - ~ - - -:- - - c - - - ~ - - -Flow-length=:315~-
: : . I ". I I ! I . . I ;;.
: : : I Tc=5.Tmin
I I I ;.
: : : : 'eN-7.8
I I I I I-
.... ... _0."' ... n" - _. t- - ." "-j ... ... t.
I I
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4
~
o
ii:
o
o
I
5
, ,
60 65 70
., "
80 85
. ,
15 20 25 30
10
35 40 45 50 55
Time (hours)
75
90 95 100
1- RunOffl
EXISTING 1-16-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 2 year Rainfal/=2.70"
Page 5
8/31/2006
Subcatchment 3S: Subcatchment 3
Runoff
1.806 af, Depth= 0.87"
27.36 cfs @ 12.08 hrs, Volume=
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 2 year Rainfall=2.70"
Area (ac)
23.360
0.260
1.330
24.950
CN Description
78 Row crops, straight row, Good, HSG B
85 Wetland
55 Woods, Good, HSG B
77 Weighted Average
Tc
(min)
14.6
Slope
(ft/ft)
0.0740
Lag/eN Method,
Velocity
(ft/sec)
1.3
Capacity
(cfs)
Description
Length
(feet)
1,180
Subcatchment 3S: Subcatchment 3
Hydrograph
28
30 ~~~---l-~-~-"--'l'--~--"'-'
I
._ .__1- h. _.~..__
I .
I I
..t..._ _._.=...... __I... _ _.0.__ _ _.:._
I I
I I
26
m.._;..._ '--.-'" --T'" - "or-
I I
__~___~___~___:___l___~
. . . . I I
I I
~ ~ .,-- - ,-. -,--- -,.....~, ~Typ~~II: 2~~h~..2year
-: h _'h -; - -. u -,.. ... ',- u. - u. - u', ...~ ~ ....: ... ~Ralilfalr..:.2:70..
--r---I---~---r-- --,---r---r-- --T---r---'---~---~---'---~---~---
... .....i~u.,......i...., ............ ..:u.:...:RunoffArea :24l950ac..
I I'"; I I I !
. -~ - - -.- - - ~- - - ~- - -:-- - ~-- - ~ -- -~ --Runoff-Vb"lum-e=1~806 -af-
I : I !' :: I j : , , ; :
. - - -,-- - ~ - . ~[~ ~~:~ ~~J~ ~ ~:~ ~ ~'~~ ~: ~~ ~ ~ ~~ ~~~~ -,.. - + J{~n~ff}O~~pt6.~ ~Q~~S~'-'~'
~i ~:: ..... ~ -.... - ..... ... - ...... ... - -..... ~ ~.f ~ Flow Length :1,:180'
I! I I . . , . . .
~"-.' ..... .J~ ..... ... ...'- ..-.,.. -..., - _..L... ...' ~ ~:" ~~: .. ~ ... 'Tc=t4~6: min
: "': . ~:CN .. 7'7
"._ ._ ... ... m. ... _. ._ ... _ m m ... m T m .... m (.. ... ... ... ... ... .0.- .7 ... h. __ ,.. m m _',_' ... ... _j m m ... j"' ... ...
I I
I Iii i i i i
- - I" - - - 1- - ... - - - - - - - - - - - - - - - - - - - - - - -
I I
______________mim__l___L__m.mm___
I I
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I
I
22 ------,-
I
20 . ~ ... ...'... ... ....:
I
18 --. -,. -. ~-
I
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~ 16
~
f1. 14
12
10
8
6
4
2
m .1 ..
I
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I
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--~---~---.---~-------~--
I
.......1... ... ......1_.
I
I
0,
o
"
10
,
75
90
,.
95 100
,
20
,... I' I
40 45 50 55
Time (hours)
,
80
,
85
15
25
30
35
60
65
70
1- RunOff~
EXISTING 1-16-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type 1/24-hr 10 year Rainfal/=4.20"
Page 6
8/31/2006
Time span=0.00-100.00 hrs, dt=0.01 hrs, 10001 points
Runoff by SCS TR-20 method, UH=SCS
Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Subcatchment 1 S: Subcatchment 1 Runoff Area=33.030 ac Runoff Depth=1.97"
Flow Length=2,440' Tc=20.3 min CN=77 Runoff=71.31 cfs 5.421 af
Subcatchment 2S: Subcatchment 2 Runoff Area=2.800 ac Runoff Depth=2.05"
Flow Length=315' Tc=5.7 min CN=78 Runoff=10.37 cfs 0.478 af
Subcatchment 3S: Subcatchment 3 Runoff Area=24.950 ac Runoff Depth=1.97"
Flow Length=1, 180' Tc=14.6 min CN=77 Runoff=64.39 cfs 4.095 af
Total Runoff Area = 60.780 ac Runoff Volume = 9.994 af Average Runoff Depth = 1.97"
EXISTING 1-16-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 10 year Rainfal/=4.20"
Page 7
8/31/2006
Subcatchment 1 S: Subcatchment 1
Runoff
71.31 cfs @ 12.13 hrs, Volume=
5.421 af, Depth= 1.97"
=
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 10 year Rainfall=4.20"
Area (ac)
2.790
5.170
0.980
24.090
33.030
CN Description
61 Pasture/grassland/range, Good, HSG B
85 Wetland
55 Woods, Good, HSG B
78 Row crops, straight row, Good, HSG B
77 Weighted Average
Tc Length Slope Velocity Capacity Description
(min) (feet) (ftIft) (ftIsec) (cfs)
20.3 2,440 0.1220 2.0 Lag/eN Method,
Subcatchment 1 S: Subcatchment 1
Hydrograph
75 - ...- .
70- - - -,.- .- --." ...
I
L___L___l___l___L______________.___________
I
I I
_. 1- ... n. ... 1_ ... ... -! ... ... ... ~._ ... ... ...!_ ... ... _, _. ... - ;- n.. ... - ;_ _. - _! - - - -+ ... - ... ~.. ... .... ...... - >t ... ... ... i_ - - __ !.n ... - ..;. .- - -. ;.., -- - ...
,
,
30 ---,---~-
I
,
.. ""I'"
I
20 ... ... ... ... - ...: ...
,
. -..-........
,
,
,
m___ _:____ +Type)I~4~hr~Oyear__
.... -i _ .... _ ~.. ... ....:- Rainfall=4.-20.....
, ,
: Rurioff .Area-=-i33T03n ac
... '..-... "j' ....m... t ... -.,..
... ...;---,.. -:---Rur;loffVplume=5.421af.
- ,- - - --- - - -, -- ...~. - - -,- - -! - - - :- -- - -:- - - -, - - - ~Ronoffbeptti=1:~97"--
~~ ~~ ~:~ ~~j~ ~ ~ t ~ ~ _:_ ~ ~ j ~ ~ ~ ~~~ ~t~~ _:_ ~~ 1 ~EI_oy},~[e~ogih:~ _2~i4AO~'~~
I : I ! I I I : : ' : : :
.... i .. . .. .. .! .. _ ... .. ... ... _ ... ... _ .. .. ...- --- -- -- - ... ... ...i ... ... :.. .. . - ....i Ie: .20 ~.3i m i: n-
...: ... _ .... ... _ - -i ... _ -!. _ ... -- _ ' _ _ -!CN~ 77
n., 1-. ._ ... ... ... _._ ... ... ...... ... ... ... .n. ... ... .... ... ... .." .... ...;... ... _, -+ ... _' _." ...
I , I
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I
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I
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,
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,
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,
,
55 -.. ...'... -... .., ..
I
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,
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-; 40 - - -.,- -- .- -
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65-
,
,
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,
;
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I
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,
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,
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I ,
, -
- .. "'f
I
60
50
25
15
10 -
o ..
o
I . t.
45 50 55
Time (hours)
j.
25
. . . , . .
40
j.
60
,
70
;.
75
.
80
90
. .
95 100
.
15
35
65
85
5
10
20
30
1- Runoffl
EXISTING 1-16-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type 1/24-hr 10 year Rainfal/=4.20"
Page 8
8/31/2006
Runoff
Subcatchment 2S: Subcatchment 2
=
10.37 cfs @ 11.97 hrs, Volume=
0.478 af, Depth= 2.05"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 10 year Rainfall=4.20"
Area (a c)
2.640
0.160
2.800
Tc
(min)
5.7
11-
10
9
8
7
~
~ 6
~
0
u:: 5
4-
3
CN Description
78 Row crops, straight row, Good, HSG B
85 Wetland
78 Weighted Average
Length
(feet)
315
Slope
(ftlft)
0.0555
Velocity
(ftlsec)
0.9
Capacity
(cfs)
Description
Lag/eN Method,
Subcatchment 2S: Subcatchment 2
Hydrograph
_ .n im __ ... .-j n. __ _ ... ... _. ...;_ _ _. .-i ... _ _ .;.. _ ... _;... _ _ _., - _ .n .+ ... _ ... f.. ... ... _ _. ... ... ... _.. ...
,
, ,
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..... "i'" ---i-'" --_...... I
I I I
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I
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o
85 90
I '1'1" 'i i I' I I
20 25 30 35 40 45 50 55 60 65 70 75 80
Time (hours)
,
10 15
, .
95 100
1- Runoffl
EXISTING 1-16-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type 1/24-hr 10 year Rainfal/=4.20"
Page 9
8/31/2006
Subcatchment 3S: Subcatchment 3
Runoff
64.39 cfs @ 12.07 hrs, Volume=
4.095 af, Depth= 1.97"
=
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 10 year Rainfall=4.20"
CN Description
78 Row crops, straight row, Good, HSG B
85 Wetland
55 Woods, Good, HSG B
77 Weighted Average
Tc Length Slope Velocity Capacity Description
(min) (feet) (ftIft) (ftIsec) (ds)
14.6 1,180 0.0740 1.3 Lag/eN Method,
Area (ac)
23.360
0.260
1.330
24.950
Subcatchment 3S: Subcatchment 3
Hydrograph
65
---~---~---'!---~---~---l---"'-
70 ~ - - -, - - - ~ - - - t- - - -,- - - -; - - - ;- - - - ,- - - -; - - - ;- - - - t- - - -, - - - + - - - t- - - -, - - - _ - - - t- - - -,- - - -; - - -
,
I
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I
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55 ...... ... .. .. ... T
I
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'... ..;Ty'pe:II-~4-hr40 year.
...... ......... ... ~...... ...:. ...'....Rainfall=4~20"..
I I
.. ........... --, "':'RurioffArea~241950ac
---- -- ---..r-.--i----,--------------.7---
....____ _ :__.Runoff_VoJume::::4.095af.
. . , i : , . : :
...... '........ .:--- ..'... "'iR~n9ffDept~=1';97'-'
... ... .... ... ... ... . ... .... - ,... ... ... ....... . ... I ... Flow LengthF'1 ;l80'
______ __ __..i.___L . , ' . . .
_ ~ _ _ _,_ _ _ ~ _ _ _ L _ _ _ _ L _ _ _ L _ _ _ '- _ _ _ _ i _ _ _:_ _ _ _,_ _ _ iT... ~:=:1 ~~~~ rraJ_1) __
.. ... ... . _ _ . ... _ ... ... L .... ....,.....: _" :.. . .. .... . ..... ... : ... _ -:CN:::77
I I
I I
60
50: ..
45
I
I
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"'-~I- -T---
I
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~
I
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I
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I
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I
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~ 35
o
u: 30
... no "1
I
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... ... .L
I
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25 ... ... . - - .:.
I
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I
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I
10 ,- - -' - - - J -
I
I
no no .oj.
I
I
... L _ _ _;_ _ _.J _ _ _ L _ _ _,_ _ _.J... _ ... L...... _ L _ _ _! _ _.....l. _ _ _ 1-... _ _;... _ ....;. _ _ _;.... _ _ _._ ........... _ _ _.... _ __
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5
o ,.
o
,
5
. ,.
15 20 25 30
I
65 70
,
75
,
85
,
90
10
35 40 45 50 55 60
Time (hours)
80
95 100
1- RUnOff~
EXISTING 1-16-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type 1/24-hr 100 year Rainfal/=6.00"
Page 1 0
8/31/2006
Time span=0.00-100.00 hrs, dt=0.01 hrs, 10001 points
Runoff by SCS TR-20 method, UH=SCS
Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
5ubcatchment 15: 5ubcatchment 1 Runoff Area=33.030 ac Runoff Depth=3.48"
Flow Length=2,440' Tc=20.3 min CN=?? Runoff=126.71 cfs 9.576 af
5ubcatchment 25: 5ubcatchment 2 Runoff Area=2.800 ac Runoff Depth=3.58"
Flow Length=315' Tc=5.7 min CN=78 Runoff=17.82 cfs 0.835 af
5ubcatchment 35: 5ubcatchment 3 Runoff Area=24.950 ac Runoff Depth=3.48"
Flow Length=1,180' Tc=14.6 min CN=?? Runoff=113.72 cfs 7.234 af
Total Runoff Area = 60.780 ac Runoff Volume = 17.645 af Average Runoff Depth = 3.48"
EXISTING 1-16-06
Prepared by James R. Hill, Inc.
HydroCAD@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Runoff
Type 1/24-hr 100 year Rainfal/=6.00"
Page 11
8/31/2006
Subcatchment 1 S: Subcatchment 1
=
126.71 cfs @ 12.13 hrs, Volume=
9.576 af, Depth= 3.48"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 100 year Rainfall=6.00"
Area (ac)
2.790
5.170
0.980
24.090
33.030
Tc
(min)
20.3
90
J!! 80
~
~ 70-:
0
u: 60
50
40
30-
CN Description
61 Pasture/grassland/range, Good, HSG B
85 Wetland
55 Woods, Good, HSG B
78 Row crops, straight row, Good, HSG B
77 Weighted Average
Length
(feet)
2,440
Slope
(ftIft)
0.1220
Velocity
(ftIsec)
2.0
Capacity
(cfs)
Description
Lag/eN Method,
Subcatchment 1 S: Subcatchment 1
Hydrograph
140
I
I
.. ... on :... ___ ... ...: _ ~_ ....; ... _ ... I...
I
I
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I
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I
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120-.. - ...:
I
I
I
_. _ on ._ ... _ n. ..I... n" ... _<. ... .n ... ~. 0.. on n.',_.. ... ... ..: _... _ '... _.... ... _.._ ... ... ... _...
I
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.=-1__ _,_...... _,_...... i........ _1...__-' _ _ _ L _... _1_ __..1_...... L... __,_... _..1_... _:.......... _'..........1...........
RunQff_Area-::33~03;O_ ac__
I I
... -' ...1 ...: .. Runoff-Volume=9.576af-..
I ; I . ; . , , ,
_ _ ....- - - -, - - - .1. i .... _ 'iR~nqffDepth=~ :48 '1- _
- ,- .... ..J - _ .... ~.- - -- . _ ,_ _ -: - -.. --- ,- -: FloW Length~2~J4401- -
. _ ;.... ... ... -l ... ... _ .... _ _ _;_ _ _ -' _ _ _ +- _ _ _1_ _ _ .... _ _ _ .... _ _ _1_ _ _ ..;. _ _ _ ,.... _ _ _,_ _ ... ..; _ _ ...:- _ _ _: _ _ _ .,;... _ _ _
_ ... _:Ie._ 20.3:mi~IJ__
_ ... :CN=77- ...
130
110
100
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"
30
j' I
45 50 55
Time (hours)
'1
80 85
, .
90
20
25
35 40
60
65 70
75
95 100
1- Runoff'
EXISTING 1-16-06
Prepared by James R. Hill, Inc.
HydroCAD@7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type 1/24-hr 100 year Rainfal/=6.00"
Page 12
8/31/2006
Subcatchment 2S: Subcatchment 2
Runoff
0.835 af, Depth= 3.58"
=
17.82 cfs @ 11.97 hrs, Volume=
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 100 year Rainfall=6.00"
Area (a c)
2.640
0.160
2.800
CN Description
78 Row crops, straight row, Good, HSG B
85 Wetland
78 Weighted Average
Tc
(min)
5.7
Description
Length
(feet)
315
Slope
(ftIft)
0.0555
Velocity
(ftIsec)
0.9
Capacity
(cfs)
Lag/eN Method,
Subcatchment 2S: Subcatchment 2
Hydrograph
, , ,
-,- - - F - - - ., - - - ,- - - -; - - - :- - - -:- - - -, - - - i - - - r - - -i - - - T - - -, - - -i- - - -: - - - , - - -
19
,
18~ .. ... '-0" _'-.n. ~--- ,. .---.-,... -.-..-,- ..._,. - .--,.. - --,- - -.., - - -.,.- -. -i--- - +-- -;--- -"._- -; --- ,. -.-.-.
I 1 i I ! ; i : i ! I I ; ! ! ; ; ;
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15 - - -' -- - ~ - - - ~ - --:- - - ~ - - - ~ - --:-- - ~ - - - ~ - - - ~ -- -' - -- ~ - -- ~ -- -' -Ra i nfall=6;OO '.. - -
14: "").. --;"" on on ..: ... .. .. :. .. ".. ".. :... ... _. u' h' ... ... ... _.~ _ ..' ... .m... ...' m .. m .!. m .... ... I... ._ ... ...; no on ... ..;. m m .._ :.. __ ... ... ... ~.! ... .. .." L. ... ...
13 .... +: ...J.. .... ... ... ... ... ... ""',' . RurioffArea=2~800ac .
. "12 - I I I I I I ;
~ 11 . ~ ~ -:- ~ ~ ~ -: ~:~~~ ~:~~~ ~~ - ~ r~~~;~ ~.~~ ~ ~~~ ~ ~-~ ~:RuQofrVplQm:~:~Q~8'~5 ~a[~
; 10 .. .. . ;.. ... -:- ... ..., ,- ." -. ... -,- - -iRlrn off'De.th=3 ~S8"'" ...
ff. 9 ..... -,... ... ... ., . ..... ,- - ... ...,... ... - -, - - - ;. - . . -, - - ... c' .... - ... ,... .- ... ., - - .- .. - ... ,- . ... ...,... . - .., - . - p -. -.,. ... . .., . . ... ,. ... .
8 .---'.--~- --~---;---~---~---'---~---'---~---:'--~---:Flo'w~len' gt'h='31.S. ~--
: j I : I ! ! i: : Ii, :. i,
7::' n.... ...1.. n. ... .J. ... n. L. _ n. min_ _ _ ..1 n' _..' n' J.. n' .. 'n i.n.. _;... ... _._.L _ ... _ L. ... ....:_. n' n' ...t. "." 'n ...1... ... ... ...i....... m .:. _ n. n. ~.. m.... _:m... n. ..~ n. n'_'" i.. ... _. '"'
6 ....' - - - ~ - . - ~ . - -:- - - ~ - - - ~ - - -:- - - - - - - - - - - ~ - - -' - - - ~ - - - ~ - - -; - - - ~ - Tc=5...7 ~ m in - -
5- I I I )' . . . .
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... ... "i" .... j" m m Uj'" , . n_ ... "j"" ... In
I f I I I
3 - - - -!... ... ... I" - - r - ... -!- - - "l ... ... ... r- ... ... - 1- ... ... -I - ... ... i - ... - ,- - ... -, - - ... T ... - ... r ... - -, ... - ... -: - - ... :- ... - - i- ... ... : ... ... - :- ... ... ...
I I I! I I
2 ......mm........I. 1-.................-..1 .................... .-.........-...........,......... .....T..........,....
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, , I
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o
5
. .
20
80
.,
30
,.
40
, ,
45 50 55
Time (hours)
, '
60
85
90
,.
95
70
10
15
25
35
65
75
1- RUnOffl
100
EXISTING 1-16-06
Prepared by James R. Hill, Inc.
HydroCAO@ 7.00 sIn 000744 @ 1986-2003 Applied Microcomputer Systems
Type /I 24-hr 100 year Rainfal/=6.00"
Page 13
8/31/2006
Subcatchment 3S: Subcatchment 3
Runoff
7.234 af, Depth= 3.48"
=
113.72 cfs @ 12.07 hrs, Volume=
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs
Type II 24-hr 100 year Rainfall=6.00"
Area (ac)
23.360
0.260
1.330
24.950
CN Description
78 Row crops, straight row, Good, HSG B
85 Wetland
55 Woods, Good, HSG B
77 Weighted Average
Tc
(min)
14.6
Description
Length
(feet)
1,180
Slope
(ftlfl)
0.0740
Velocity
(ftlsec)
1.3
Capacity
(cfs)
Lag/eN Method,
Subcatchment 3S: Subcatchment 3
Hydrograph
125
120.
115':: .. ... ...,...
~~~.. = = =i= == ~= :=~ = = ~== =t = = =1= = = ~= == ~ = =:!:==j == = = = =1Ylie=rr 24-.11r=roo =year= =
1~~~' ': = =: ... ........ .. .... ....: :. = = : :=: = =.= = :: = -,. :- = :;:: :. iURa I nfeill -6;00 ~...
90~ .........1 ..~ m.. ...................._..,...........1 ....,1... ....1...... ...~_.;__.__.J._m............'m............
85~ _:d_"~ _ -. ...:, -"RunoffArea-:24'950ac
80- - - - -: - ... - - .. -... ... - - -: - - - - - - - - - - - - - - - - - -;- - - ~ - - - :... - - -1- - - ...:. - - ... .:... ... - _'m - - ....:. - - - ~ - - -' - - - ...:... - - -
~ ;~-' = ==:= = = ~=:=~= =~== = r == =i=== ~===: ===:= = =~ = = RUQ:off=V91U-m:e:-:7;:.234 :(,11::
~ ~~~.: . :. t::.~ =::: t: = _:_:: ~:::~:: _:_ :: j:': = :.:: :iR~n'offpept~';"~:48'1 ..
LL ~F. _ ~ ~:_ _ _ ~ _ . ~ ~ ~ = J = ~ = = ~ ~ ~,: = = ~ _ ~ = = ~ ~ =!~ ~ = ~ = = ~ ~ =: ~:~ ~I}?~ ~~~~Jj~~ ~ ~~ ~,~ _~~'__
40 .. ...,.... _ ...: _ .. .... T .. _ .... _ _ _ .... _ .. . - _ _ -:. - -, -.. . ,.: ... .... ... - -. - -:fe' 14~6:min
35; - - - _1- _ _ .1... _ _ i.... _ ... _I _ _ _ 1.. _ _ ... _ ....J... _ ... 1.. _ _ _1_ ... _ ....::. _ _ _ :.... _ _ _1_ _ _ .1 _ _ _ i.... _ _ _,_ ... ... ..;. _ ... ... 0_ ... _ _' _ ... _ ...:.. _ _ _
~~~ . : : :i" - .. ~ - . = : : - ~ .. - - ~ = = =:= -- ~ - .. : = = -- i= .. = : -- : ~ : - -i- = : ~ - - : ~ : : -:- - - ~ - : = rC N =7:7: =
20-~ .. ... ....;... .. ... on ..~ : ..! m ... ... L ... ... ..._:... ... ... ..1 ... ... ... ... _ ... ... ... -l..~ ... ... i... ... m .." ... .... .". ... n. ... n.
15~ 'n.... "'1'" ... ... ....~. ... ... ..0.,- ... ... ..., mi.... .. ... i......... "'1- ...... ..: ... ..-... :.. ....... _'m"'''' ..:
10: no no ...:... m n. m ... _~ _. : m .... ... ... ._ _.. m m ... ....,... ... .. . ... m m ;.. m n. n.:__ n. ... -:
5 - L...... _I _ ... ... 1.. _ _ ... i_ _ _ _;... _ ... l.. ... _ ...;_ _ _ J. ... _ _ L ... ... _:_ _ ... j ... ... _ L _ _ _,_ _ _ j _ _ ... ~ ... ... _; _ ... _ .i. _ ... ...
o
o
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""", .. ... ._ ... .... _. _" m ".." ... ... n" "m _. _. ... .... ._ (_ _. m. ... ... ... _ ... ... ... __1__ ... ... .... ... ... m .... m m n...... .n n. ..., ... ... ...;...
..J ... ... ... 1. ... ... ... '- ... ... ..J... ... ... .L ... ... ... 1m _ ... J ... ... ... L ... ... _1_ ... ... ....: ... ... ... '- ... ... _;_ ... ... ....: ... ... ... L ... ... _'... _ _ 1. _ _ _
, "
....m __ _._-:_. m -,.- m _.1'__ - ,-- - :-- -1..--.-. -: -.--.:--
5
,. ,
45 50 55
Time (hours)
60
. ,
85
,
90
,
95
65
70
75
80
10
15
20
25
30
35
40
1- RUnOff~
100