Loading...
7.2 AG Proposed Routing1 Proposed 1A 2 PROPOSED 3S Proposed 1B 2P POND A WP WETLAND P 10L Irrigation System Routing Diagram for ARBORGLEN 04202017 Prepared by Sathre-Bergquist, Inc., Printed 4/21/2017 HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Subcat Reach Pond Link Proposed Routing - Arbor Glen ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 2HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Area Listing (selected nodes) Area (acres) CN Description (subcatchment-numbers) 4.790 83 1/4 acre lots, 38% imp, HSG C (1, 3S) 1.000 65 Brush, Good, HSG C (2) 0.050 98 Water Surface, HSG C (2) 5.840 80 TOTAL AREA Proposed Routing - Arbor Glen ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 3HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Soil Listing (selected nodes) Area (acres) Soil Group Subcatchment Numbers 0.000 HSG A 0.000 HSG B 5.840 HSG C 1, 2, 3S 0.000 HSG D 0.000 Other 5.840 TOTAL AREA Proposed Routing - Arbor Glen ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 4HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Ground Covers (selected nodes) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 0.000 4.790 0.000 0.000 4.790 1/4 acre lots, 38% imp 1, 3S 0.000 0.000 1.000 0.000 0.000 1.000 Brush, Good 2 0.000 0.000 0.050 0.000 0.000 0.050 Water Surface 2 0.000 0.000 5.840 0.000 0.000 5.840 TOTAL AREA Proposed Routing - Arbor Glen ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 5HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Pipe Listing (selected nodes) Line# Node Number In-Invert (feet) Out-Invert (feet) Length (feet) Slope (ft/ft) n Diam/Width (inches) Height (inches) Inside-Fill (inches) 1 1 0.00 0.00 660.0 0.0300 0.013 15.0 0.0 0.0 2 3S 0.00 0.00 660.0 0.0300 0.013 18.0 0.0 0.0 3 2P 898.00 888.00 80.0 0.1250 0.012 18.0 0.0 0.0 Proposed Routing - Arbor Glen MN-RPBCWD_v1_Atlas14_24-hr2y_S1 2y 24hr Rainfall=2.87"ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 6HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Time span=0.00-200.00 hrs, dt=0.01 hrs, 20001 points Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv. Reach routing by Sim-Route method - Pond routing by Sim-Route method Runoff Area=1.680 ac 38.00% Impervious Runoff Depth=1.52"Subcatchment 1: Proposed 1A Flow Length=810' Tc=15.5 min CN=74/98 Runoff=2.76 cfs 0.212 af Runoff Area=1.050 ac 4.76% Impervious Runoff Depth=0.55"Subcatchment 2: PROPOSED Flow Length=300' Slope=0.1000 '/' Tc=13.1 min CN=65/98 Runoff=0.54 cfs 0.048 af Runoff Area=3.110 ac 38.00% Impervious Runoff Depth=1.52"Subcatchment 3S: Proposed 1B Flow Length=916' Tc=16.3 min CN=74/98 Runoff=4.97 cfs 0.393 af Peak Elev=900.45' Storage=13,700 cf Inflow=7.72 cfs 0.605 afPond 2P: POND A Primary=2.72 cfs 0.317 af Secondary=0.00 cfs 0.000 af Tertiary=0.02 cfs 0.197 af Outflow=2.74 cfs 0.513 af Inflow=2.96 cfs 0.365 afPond WP: WETLAND P Primary=2.96 cfs 0.365 af Inflow=0.02 cfs 0.197 afLink 10L: Irrigation System Primary=0.02 cfs 0.197 af Total Runoff Area = 5.840 ac Runoff Volume = 0.653 af Average Runoff Depth = 1.34" 67.98% Pervious = 3.970 ac 32.02% Impervious = 1.870 ac Proposed Routing - Arbor Glen MN-RPBCWD_v1_Atlas14_24-hr2y_S1 2y 24hr Rainfall=2.87"ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 7HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Subcatchment 1: Proposed 1A Runoff = 2.76 cfs @ 12.21 hrs, Volume= 0.212 af, Depth= 1.52" Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv., Time Span= 0.00-200.00 hrs, dt= 0.01 hrs MN-RPBCWD_v1_Atlas14_24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description 1.680 83 1/4 acre lots, 38% imp, HSG C 0.000 87 1/4 acre lots, 38% imp, HSG D 1.680 83 Weighted Average 1.042 74 62.00% Pervious Area 0.638 98 38.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 14.3 150 0.0200 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 2.87" 1.2 660 0.0300 9.12 11.19 Pipe Channel, 15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31' n= 0.013 Concrete pipe, bends & connections 15.5 810 Total Subcatchment 1: Proposed 1A Runoff Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 MN-RPBCWD_v1_Atlas14_24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=1.680 ac Runoff Volume=0.212 af Runoff Depth=1.52" Flow Length=810' Tc=15.5 min CN=74/98 2.76 cfs Proposed Routing - Arbor Glen MN-RPBCWD_v1_Atlas14_24-hr2y_S1 2y 24hr Rainfall=2.87"ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 8HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Subcatchment 2: PROPOSED Runoff = 0.54 cfs @ 12.21 hrs, Volume= 0.048 af, Depth= 0.55" Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv., Time Span= 0.00-200.00 hrs, dt= 0.01 hrs MN-RPBCWD_v1_Atlas14_24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description 1.000 65 Brush, Good, HSG C 0.050 98 Water Surface, HSG C 1.050 67 Weighted Average 1.000 65 95.24% Pervious Area 0.050 98 4.76% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 13.1 300 0.1000 0.38 Sheet Flow, Rear Yard Grass: Short n= 0.150 P2= 2.87" Subcatchment 2: PROPOSED Runoff Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14_24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=1.050 ac Runoff Volume=0.048 af Runoff Depth=0.55" Flow Length=300' Slope=0.1000 '/' Tc=13.1 min CN=65/98 0.54 cfs Proposed Routing - Arbor Glen MN-RPBCWD_v1_Atlas14_24-hr2y_S1 2y 24hr Rainfall=2.87"ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 9HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Subcatchment 3S: Proposed 1B Runoff = 4.97 cfs @ 12.22 hrs, Volume= 0.393 af, Depth= 1.52" Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv., Time Span= 0.00-200.00 hrs, dt= 0.01 hrs MN-RPBCWD_v1_Atlas14_24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description 3.110 83 1/4 acre lots, 38% imp, HSG C 0.000 87 1/4 acre lots, 38% imp, HSG D 3.110 83 Weighted Average 1.928 74 62.00% Pervious Area 1.182 98 38.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.2 256 0.0500 0.28 Sheet Flow, Grass: Short n= 0.150 P2= 2.87" 1.1 660 0.0300 10.30 18.19 Pipe Channel, RCP_Round 18" 18.0" Round Area= 1.8 sf Perim= 4.7' r= 0.38' n= 0.013 Concrete pipe, bends & connections 16.3 916 Total Subcatchment 3S: Proposed 1B Runoff Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14_24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=3.110 ac Runoff Volume=0.393 af Runoff Depth=1.52" Flow Length=916' Tc=16.3 min CN=74/98 4.97 cfs Proposed Routing - Arbor Glen MN-RPBCWD_v1_Atlas14_24-hr2y_S1 2y 24hr Rainfall=2.87"ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 10HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Pond 2P: POND A Inflow Area = 4.790 ac, 38.00% Impervious, Inflow Depth = 1.52" for 2y 24hr event Inflow = 7.72 cfs @ 12.22 hrs, Volume= 0.605 af Outflow = 2.74 cfs @ 12.57 hrs, Volume= 0.513 af, Atten= 64%, Lag= 21.1 min Primary = 2.72 cfs @ 12.57 hrs, Volume= 0.317 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Tertiary = 0.02 cfs @ 11.84 hrs, Volume= 0.197 af Routing by Sim-Route method, Time Span= 0.00-200.00 hrs, dt= 0.01 hrs Peak Elev= 900.45' @ 12.57 hrs Surf.Area= 0 sf Storage= 13,700 cf Plug-Flow detention time= 1,456.9 min calculated for 0.513 af (85% of inflow) Center-of-Mass det. time= 1,392.1 min ( 2,189.6 - 797.4 ) Volume Invert Avail.Storage Storage Description #1 895.99' 25,003 cf Custom Stage Data Listed below Elevation Cum.Store (feet) (cubic-feet) 895.99 0 896.00 4,000 898.00 8,500 900.00 12,600 902.00 17,500 904.00 22,800 910.00 25,003 Device Routing Invert Outlet Devices #1 Device 2 899.50'Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 0.00 2.30 2.30 6.00 Width (feet) 0.90 0.90 4.00 4.00 #2 Primary 898.00'18.0" Round RCP_Round 18" L= 80.0' RCP, rounded edge headwall, Ke= 0.100 Inlet / Outlet Invert= 898.00' / 888.00' S= 0.1250 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.77 sf #3 Secondary 904.00'Land EOF, Cv= 2.62 (C= 3.28) Head (feet) 0.00 3.00 Width (feet) 5.00 5.00 #4 Tertiary 896.00'Similation for Irrigation Draw Down Head (feet) 0.00 0.01 10.00 Disch. (cfs) 0.000 0.020 0.020 Proposed Routing - Arbor Glen MN-RPBCWD_v1_Atlas14_24-hr2y_S1 2y 24hr Rainfall=2.87"ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 11HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Primary OutFlow Max=2.72 cfs @ 12.57 hrs HW=900.45' TW=0.00' (Dynamic Tailwater) 2=RCP_Round 18" (Passes 2.72 cfs of 15.12 cfs potential flow) 1=Custom Weir/Orifice (Weir Controls 2.72 cfs @ 3.19 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=895.99' TW=0.00' (Dynamic Tailwater) 3=Land EOF ( Controls 0.00 cfs) Tertiary OutFlow Max=0.02 cfs @ 11.84 hrs HW=896.01' TW=0.00' (Dynamic Tailwater) 4=Similation for Irrigation Draw Down (Custom Controls 0.02 cfs) Pond 2P: POND A Inflow Outflow Primary Secondary Tertiary Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)8 7 6 5 4 3 2 1 0 Inflow Area=4.790 ac Peak Elev=900.45' Storage=13,700 cf 7.72 cfs 2.74 cfs 2.72 cfs 0.00 cfs 0.02 cfs Proposed Routing - Arbor Glen MN-RPBCWD_v1_Atlas14_24-hr2y_S1 2y 24hr Rainfall=2.87"ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 12HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Pond WP: WETLAND P [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 5.840 ac, 32.02% Impervious, Inflow Depth = 0.75" for 2y 24hr event Inflow = 2.96 cfs @ 12.56 hrs, Volume= 0.365 af Primary = 2.96 cfs @ 12.57 hrs, Volume= 0.365 af, Atten= 0%, Lag= 0.6 min Routing by Sim-Route method, Time Span= 0.00-200.00 hrs, dt= 0.01 hrs Pond WP: WETLAND P Inflow Primary Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Inflow Area=5.840 ac 2.96 cfs 2.96 cfs Proposed Routing - Arbor Glen MN-RPBCWD_v1_Atlas14_24-hr2y_S1 2y 24hr Rainfall=2.87"ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 13HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Link 10L: Irrigation System Inflow = 0.02 cfs @ 11.84 hrs, Volume= 0.197 af Primary = 0.02 cfs @ 11.85 hrs, Volume= 0.197 af, Atten= 0%, Lag= 0.6 min Primary outflow = Inflow, Time Span= 0.00-200.00 hrs, dt= 0.01 hrs Link 10L: Irrigation System Inflow Primary Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)0.022 0.021 0.02 0.019 0.018 0.017 0.016 0.015 0.014 0.013 0.012 0.011 0.01 0.009 0.008 0.007 0.006 0.005 0.004 0.003 0.002 0.001 0 0.02 cfs 0.02 cfs Proposed Routing - Arbor Glen MN-RPBCWD_v1_Atlas14_24-hr10y_S1 10y 24hr Rainfall=4.27"ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 14HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Time span=0.00-200.00 hrs, dt=0.01 hrs, 20001 points Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv. Reach routing by Sim-Route method - Pond routing by Sim-Route method Runoff Area=1.680 ac 38.00% Impervious Runoff Depth=2.65"Subcatchment 1: Proposed 1A Flow Length=810' Tc=15.5 min CN=74/98 Runoff=5.06 cfs 0.371 af Runoff Area=1.050 ac 4.76% Impervious Runoff Depth=1.32"Subcatchment 2: PROPOSED Flow Length=300' Slope=0.1000 '/' Tc=13.1 min CN=65/98 Runoff=1.65 cfs 0.116 af Runoff Area=3.110 ac 38.00% Impervious Runoff Depth=2.65"Subcatchment 3S: Proposed 1B Flow Length=916' Tc=16.3 min CN=74/98 Runoff=9.11 cfs 0.686 af Peak Elev=901.82' Storage=17,065 cf Inflow=14.15 cfs 1.057 afPond 2P: POND A Primary=10.47 cfs 0.767 af Secondary=0.00 cfs 0.000 af Tertiary=0.02 cfs 0.197 af Outflow=10.49 cfs 0.965 af Inflow=11.58 cfs 0.883 afPond WP: WETLAND P Primary=11.58 cfs 0.883 af Inflow=0.02 cfs 0.197 afLink 10L: Irrigation System Primary=0.02 cfs 0.197 af Total Runoff Area = 5.840 ac Runoff Volume = 1.173 af Average Runoff Depth = 2.41" 67.98% Pervious = 3.970 ac 32.02% Impervious = 1.870 ac Proposed Routing - Arbor Glen MN-RPBCWD_v1_Atlas14_24-hr10y_S1 10y 24hr Rainfall=4.27"ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 15HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Subcatchment 1: Proposed 1A Runoff = 5.06 cfs @ 12.21 hrs, Volume= 0.371 af, Depth= 2.65" Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv., Time Span= 0.00-200.00 hrs, dt= 0.01 hrs MN-RPBCWD_v1_Atlas14_24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description 1.680 83 1/4 acre lots, 38% imp, HSG C 0.000 87 1/4 acre lots, 38% imp, HSG D 1.680 83 Weighted Average 1.042 74 62.00% Pervious Area 0.638 98 38.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 14.3 150 0.0200 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 2.87" 1.2 660 0.0300 9.12 11.19 Pipe Channel, 15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31' n= 0.013 Concrete pipe, bends & connections 15.5 810 Total Subcatchment 1: Proposed 1A Runoff Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14_24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=1.680 ac Runoff Volume=0.371 af Runoff Depth=2.65" Flow Length=810' Tc=15.5 min CN=74/98 5.06 cfs Proposed Routing - Arbor Glen MN-RPBCWD_v1_Atlas14_24-hr10y_S1 10y 24hr Rainfall=4.27"ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 16HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Subcatchment 2: PROPOSED Runoff = 1.65 cfs @ 12.19 hrs, Volume= 0.116 af, Depth= 1.32" Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv., Time Span= 0.00-200.00 hrs, dt= 0.01 hrs MN-RPBCWD_v1_Atlas14_24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description 1.000 65 Brush, Good, HSG C 0.050 98 Water Surface, HSG C 1.050 67 Weighted Average 1.000 65 95.24% Pervious Area 0.050 98 4.76% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 13.1 300 0.1000 0.38 Sheet Flow, Rear Yard Grass: Short n= 0.150 P2= 2.87" Subcatchment 2: PROPOSED Runoff Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14_24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=1.050 ac Runoff Volume=0.116 af Runoff Depth=1.32" Flow Length=300' Slope=0.1000 '/' Tc=13.1 min CN=65/98 1.65 cfs Proposed Routing - Arbor Glen MN-RPBCWD_v1_Atlas14_24-hr10y_S1 10y 24hr Rainfall=4.27"ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 17HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Subcatchment 3S: Proposed 1B Runoff = 9.11 cfs @ 12.22 hrs, Volume= 0.686 af, Depth= 2.65" Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv., Time Span= 0.00-200.00 hrs, dt= 0.01 hrs MN-RPBCWD_v1_Atlas14_24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description 3.110 83 1/4 acre lots, 38% imp, HSG C 0.000 87 1/4 acre lots, 38% imp, HSG D 3.110 83 Weighted Average 1.928 74 62.00% Pervious Area 1.182 98 38.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.2 256 0.0500 0.28 Sheet Flow, Grass: Short n= 0.150 P2= 2.87" 1.1 660 0.0300 10.30 18.19 Pipe Channel, RCP_Round 18" 18.0" Round Area= 1.8 sf Perim= 4.7' r= 0.38' n= 0.013 Concrete pipe, bends & connections 16.3 916 Total Subcatchment 3S: Proposed 1B Runoff Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14_24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=3.110 ac Runoff Volume=0.686 af Runoff Depth=2.65" Flow Length=916' Tc=16.3 min CN=74/98 9.11 cfs Proposed Routing - Arbor Glen MN-RPBCWD_v1_Atlas14_24-hr10y_S1 10y 24hr Rainfall=4.27"ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 18HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Pond 2P: POND A Inflow Area = 4.790 ac, 38.00% Impervious, Inflow Depth = 2.65" for 10y 24hr event Inflow = 14.15 cfs @ 12.22 hrs, Volume= 1.057 af Outflow = 10.49 cfs @ 12.35 hrs, Volume= 0.965 af, Atten= 26%, Lag= 8.0 min Primary = 10.47 cfs @ 12.35 hrs, Volume= 0.767 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Tertiary = 0.02 cfs @ 11.26 hrs, Volume= 0.197 af Routing by Sim-Route method, Time Span= 0.00-200.00 hrs, dt= 0.01 hrs Peak Elev= 901.82' @ 12.35 hrs Surf.Area= 0 sf Storage= 17,065 cf Plug-Flow detention time= 786.4 min calculated for 0.965 af (91% of inflow) Center-of-Mass det. time= 749.6 min ( 1,531.6 - 782.0 ) Volume Invert Avail.Storage Storage Description #1 895.99' 25,003 cf Custom Stage Data Listed below Elevation Cum.Store (feet) (cubic-feet) 895.99 0 896.00 4,000 898.00 8,500 900.00 12,600 902.00 17,500 904.00 22,800 910.00 25,003 Device Routing Invert Outlet Devices #1 Device 2 899.50'Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 0.00 2.30 2.30 6.00 Width (feet) 0.90 0.90 4.00 4.00 #2 Primary 898.00'18.0" Round RCP_Round 18" L= 80.0' RCP, rounded edge headwall, Ke= 0.100 Inlet / Outlet Invert= 898.00' / 888.00' S= 0.1250 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.77 sf #3 Secondary 904.00'Land EOF, Cv= 2.62 (C= 3.28) Head (feet) 0.00 3.00 Width (feet) 5.00 5.00 #4 Tertiary 896.00'Similation for Irrigation Draw Down Head (feet) 0.00 0.01 10.00 Disch. (cfs) 0.000 0.020 0.020 Proposed Routing - Arbor Glen MN-RPBCWD_v1_Atlas14_24-hr10y_S1 10y 24hr Rainfall=4.27"ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 19HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Primary OutFlow Max=10.46 cfs @ 12.35 hrs HW=901.82' TW=0.00' (Dynamic Tailwater) 2=RCP_Round 18" (Passes 10.46 cfs of 20.34 cfs potential flow) 1=Custom Weir/Orifice (Weir Controls 10.46 cfs @ 4.85 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=895.99' TW=0.00' (Dynamic Tailwater) 3=Land EOF ( Controls 0.00 cfs) Tertiary OutFlow Max=0.02 cfs @ 11.26 hrs HW=896.02' TW=0.00' (Dynamic Tailwater) 4=Similation for Irrigation Draw Down (Custom Controls 0.02 cfs) Pond 2P: POND A Inflow Outflow Primary Secondary Tertiary Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=4.790 ac Peak Elev=901.82' Storage=17,065 cf 14.15 cfs 10.49 cfs 10.47 cfs 0.00 cfs 0.02 cfs Proposed Routing - Arbor Glen MN-RPBCWD_v1_Atlas14_24-hr10y_S1 10y 24hr Rainfall=4.27"ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 20HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Pond WP: WETLAND P [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 5.840 ac, 32.02% Impervious, Inflow Depth = 1.81" for 10y 24hr event Inflow = 11.58 cfs @ 12.34 hrs, Volume= 0.883 af Primary = 11.58 cfs @ 12.35 hrs, Volume= 0.883 af, Atten= 0%, Lag= 0.6 min Routing by Sim-Route method, Time Span= 0.00-200.00 hrs, dt= 0.01 hrs Pond WP: WETLAND P Inflow Primary Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=5.840 ac 11.58 cfs 11.58 cfs Proposed Routing - Arbor Glen MN-RPBCWD_v1_Atlas14_24-hr10y_S1 10y 24hr Rainfall=4.27"ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 21HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Link 10L: Irrigation System Inflow = 0.02 cfs @ 11.26 hrs, Volume= 0.197 af Primary = 0.02 cfs @ 11.27 hrs, Volume= 0.197 af, Atten= 0%, Lag= 0.6 min Primary outflow = Inflow, Time Span= 0.00-200.00 hrs, dt= 0.01 hrs Link 10L: Irrigation System Inflow Primary Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)0.022 0.021 0.02 0.019 0.018 0.017 0.016 0.015 0.014 0.013 0.012 0.011 0.01 0.009 0.008 0.007 0.006 0.005 0.004 0.003 0.002 0.001 0 0.02 cfs 0.02 cfs Proposed Routing - Arbor Glen MN-RPBCWD_v1_Atlas14_24-hr100y_S1 100y 24hr Rainfall=7.41"ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 22HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Time span=0.00-200.00 hrs, dt=0.01 hrs, 20001 points Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv. Reach routing by Sim-Route method - Pond routing by Sim-Route method Runoff Area=1.680 ac 38.00% Impervious Runoff Depth=5.45"Subcatchment 1: Proposed 1A Flow Length=810' Tc=15.5 min CN=74/98 Runoff=9.82 cfs 0.764 af Runoff Area=1.050 ac 4.76% Impervious Runoff Depth=3.60"Subcatchment 2: PROPOSED Flow Length=300' Slope=0.1000 '/' Tc=13.1 min CN=65/98 Runoff=4.57 cfs 0.315 af Runoff Area=3.110 ac 38.00% Impervious Runoff Depth=5.45"Subcatchment 3S: Proposed 1B Flow Length=916' Tc=16.3 min CN=74/98 Runoff=17.72 cfs 1.413 af Peak Elev=903.05' Storage=20,286 cf Inflow=27.51 cfs 2.177 afPond 2P: POND A Primary=24.06 cfs 1.886 af Secondary=0.00 cfs 0.000 af Tertiary=0.02 cfs 0.199 af Outflow=24.08 cfs 2.085 af Inflow=27.76 cfs 2.201 afPond WP: WETLAND P Primary=27.76 cfs 2.201 af Inflow=0.02 cfs 0.199 afLink 10L: Irrigation System Primary=0.02 cfs 0.199 af Total Runoff Area = 5.840 ac Runoff Volume = 2.492 af Average Runoff Depth = 5.12" 67.98% Pervious = 3.970 ac 32.02% Impervious = 1.870 ac Proposed Routing - Arbor Glen MN-RPBCWD_v1_Atlas14_24-hr100y_S1 100y 24hr Rainfall=7.41"ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 23HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Subcatchment 1: Proposed 1A Runoff = 9.82 cfs @ 12.21 hrs, Volume= 0.764 af, Depth= 5.45" Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv., Time Span= 0.00-200.00 hrs, dt= 0.01 hrs MN-RPBCWD_v1_Atlas14_24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description 1.680 83 1/4 acre lots, 38% imp, HSG C 0.000 87 1/4 acre lots, 38% imp, HSG D 1.680 83 Weighted Average 1.042 74 62.00% Pervious Area 0.638 98 38.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 14.3 150 0.0200 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 2.87" 1.2 660 0.0300 9.12 11.19 Pipe Channel, 15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31' n= 0.013 Concrete pipe, bends & connections 15.5 810 Total Subcatchment 1: Proposed 1A Runoff Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14_24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=1.680 ac Runoff Volume=0.764 af Runoff Depth=5.45" Flow Length=810' Tc=15.5 min CN=74/98 9.82 cfs Proposed Routing - Arbor Glen MN-RPBCWD_v1_Atlas14_24-hr100y_S1 100y 24hr Rainfall=7.41"ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 24HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Subcatchment 2: PROPOSED Runoff = 4.57 cfs @ 12.18 hrs, Volume= 0.315 af, Depth= 3.60" Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv., Time Span= 0.00-200.00 hrs, dt= 0.01 hrs MN-RPBCWD_v1_Atlas14_24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description 1.000 65 Brush, Good, HSG C 0.050 98 Water Surface, HSG C 1.050 67 Weighted Average 1.000 65 95.24% Pervious Area 0.050 98 4.76% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 13.1 300 0.1000 0.38 Sheet Flow, Rear Yard Grass: Short n= 0.150 P2= 2.87" Subcatchment 2: PROPOSED Runoff Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14_24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=1.050 ac Runoff Volume=0.315 af Runoff Depth=3.60" Flow Length=300' Slope=0.1000 '/' Tc=13.1 min CN=65/98 4.57 cfs Proposed Routing - Arbor Glen MN-RPBCWD_v1_Atlas14_24-hr100y_S1 100y 24hr Rainfall=7.41"ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 25HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Subcatchment 3S: Proposed 1B Runoff = 17.72 cfs @ 12.22 hrs, Volume= 1.413 af, Depth= 5.45" Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv., Time Span= 0.00-200.00 hrs, dt= 0.01 hrs MN-RPBCWD_v1_Atlas14_24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description 3.110 83 1/4 acre lots, 38% imp, HSG C 0.000 87 1/4 acre lots, 38% imp, HSG D 3.110 83 Weighted Average 1.928 74 62.00% Pervious Area 1.182 98 38.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.2 256 0.0500 0.28 Sheet Flow, Grass: Short n= 0.150 P2= 2.87" 1.1 660 0.0300 10.30 18.19 Pipe Channel, RCP_Round 18" 18.0" Round Area= 1.8 sf Perim= 4.7' r= 0.38' n= 0.013 Concrete pipe, bends & connections 16.3 916 Total Subcatchment 3S: Proposed 1B Runoff Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14_24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=3.110 ac Runoff Volume=1.413 af Runoff Depth=5.45" Flow Length=916' Tc=16.3 min CN=74/98 17.72 cfs Proposed Routing - Arbor Glen MN-RPBCWD_v1_Atlas14_24-hr100y_S1 100y 24hr Rainfall=7.41"ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 26HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Pond 2P: POND A Inflow Area = 4.790 ac, 38.00% Impervious, Inflow Depth = 5.45" for 100y 24hr event Inflow = 27.51 cfs @ 12.21 hrs, Volume= 2.177 af Outflow = 24.08 cfs @ 12.29 hrs, Volume= 2.085 af, Atten= 12%, Lag= 4.9 min Primary = 24.06 cfs @ 12.29 hrs, Volume= 1.886 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Tertiary = 0.02 cfs @ 10.31 hrs, Volume= 0.199 af Routing by Sim-Route method, Time Span= 0.00-200.00 hrs, dt= 0.01 hrs Peak Elev= 903.05' @ 12.29 hrs Surf.Area= 0 sf Storage= 20,286 cf Plug-Flow detention time= 376.5 min calculated for 2.085 af (96% of inflow) Center-of-Mass det. time= 356.8 min ( 1,125.7 - 768.9 ) Volume Invert Avail.Storage Storage Description #1 895.99' 25,003 cf Custom Stage Data Listed below Elevation Cum.Store (feet) (cubic-feet) 895.99 0 896.00 4,000 898.00 8,500 900.00 12,600 902.00 17,500 904.00 22,800 910.00 25,003 Device Routing Invert Outlet Devices #1 Device 2 899.50'Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 0.00 2.30 2.30 6.00 Width (feet) 0.90 0.90 4.00 4.00 #2 Primary 898.00'18.0" Round RCP_Round 18" L= 80.0' RCP, rounded edge headwall, Ke= 0.100 Inlet / Outlet Invert= 898.00' / 888.00' S= 0.1250 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.77 sf #3 Secondary 904.00'Land EOF, Cv= 2.62 (C= 3.28) Head (feet) 0.00 3.00 Width (feet) 5.00 5.00 #4 Tertiary 896.00'Similation for Irrigation Draw Down Head (feet) 0.00 0.01 10.00 Disch. (cfs) 0.000 0.020 0.020 Proposed Routing - Arbor Glen MN-RPBCWD_v1_Atlas14_24-hr100y_S1 100y 24hr Rainfall=7.41"ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 27HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Primary OutFlow Max=24.06 cfs @ 12.29 hrs HW=903.05' TW=0.00' (Dynamic Tailwater) 2=RCP_Round 18" (Inlet Controls 24.06 cfs @ 13.62 fps) 1=Custom Weir/Orifice (Passes 24.06 cfs of 33.91 cfs potential flow) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=895.99' TW=0.00' (Dynamic Tailwater) 3=Land EOF ( Controls 0.00 cfs) Tertiary OutFlow Max=0.02 cfs @ 10.31 hrs HW=896.01' TW=0.00' (Dynamic Tailwater) 4=Similation for Irrigation Draw Down (Custom Controls 0.02 cfs) Pond 2P: POND A Inflow Outflow Primary Secondary Tertiary Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=4.790 ac Peak Elev=903.05' Storage=20,286 cf 27.51 cfs 24.08 cfs 24.06 cfs 0.00 cfs 0.02 cfs Proposed Routing - Arbor Glen MN-RPBCWD_v1_Atlas14_24-hr100y_S1 100y 24hr Rainfall=7.41"ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 28HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Pond WP: WETLAND P [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 5.840 ac, 32.02% Impervious, Inflow Depth = 4.52" for 100y 24hr event Inflow = 27.76 cfs @ 12.24 hrs, Volume= 2.201 af Primary = 27.76 cfs @ 12.25 hrs, Volume= 2.201 af, Atten= 0%, Lag= 0.6 min Routing by Sim-Route method, Time Span= 0.00-200.00 hrs, dt= 0.01 hrs Pond WP: WETLAND P Inflow Primary Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=5.840 ac 27.76 cfs 27.76 cfs Proposed Routing - Arbor Glen MN-RPBCWD_v1_Atlas14_24-hr100y_S1 100y 24hr Rainfall=7.41"ARBORGLEN 04202017 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 29HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Link 10L: Irrigation System Inflow = 0.02 cfs @ 10.31 hrs, Volume= 0.199 af Primary = 0.02 cfs @ 10.32 hrs, Volume= 0.199 af, Atten= 0%, Lag= 0.6 min Primary outflow = Inflow, Time Span= 0.00-200.00 hrs, dt= 0.01 hrs Link 10L: Irrigation System Inflow Primary Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)0.022 0.021 0.02 0.019 0.018 0.017 0.016 0.015 0.014 0.013 0.012 0.011 0.01 0.009 0.008 0.007 0.006 0.005 0.004 0.003 0.002 0.001 0 0.02 cfs 0.02 cfs Proposed Routing - Arbor Glen MN-RPBCWD Snowmelt_10d_100yr RPBCWD-Snowmelt Rainfall=7.20"ARBORGLEN 0420201 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 30HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Time span=0.00-200.00 hrs, dt=0.01 hrs, 20001 points Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv. Reach routing by Sim-Route method - Pond routing by Sim-Route method Runoff Area=1.680 ac 38.00% Impervious Runoff Depth>4.66"Subcatchment 1: Proposed 1A Flow Length=810' Tc=15.5 min CN=74/98 Runoff=0.26 cfs 0.653 af Runoff Area=1.050 ac 4.76% Impervious Runoff Depth>2.93"Subcatchment 2: PROPOSED Flow Length=300' Slope=0.1000 '/' Tc=13.1 min CN=65/98 Runoff=0.12 cfs 0.256 af Runoff Area=3.110 ac 38.00% Impervious Runoff Depth>4.66"Subcatchment 3S: Proposed 1B Flow Length=916' Tc=16.3 min CN=74/98 Runoff=0.49 cfs 1.208 af Peak Elev=899.89' Storage=12,379 cf Inflow=0.75 cfs 1.861 afPond 2P: POND A Primary=0.72 cfs 1.340 af Secondary=0.00 cfs 0.000 af Tertiary=0.02 cfs 0.252 af Outflow=0.74 cfs 1.592 af Inflow=0.84 cfs 1.596 afPond WP: WETLAND P Primary=0.84 cfs 1.596 af Inflow=0.02 cfs 0.252 afLink 10L: Irrigation System Primary=0.02 cfs 0.252 af Total Runoff Area = 5.840 ac Runoff Volume = 2.117 af Average Runoff Depth = 4.35" 67.98% Pervious = 3.970 ac 32.02% Impervious = 1.870 ac Proposed Routing - Arbor Glen MN-RPBCWD Snowmelt_10d_100yr RPBCWD-Snowmelt Rainfall=7.20"ARBORGLEN 0420201 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 31HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Subcatchment 1: Proposed 1A Runoff = 0.26 cfs @ 121.37 hrs, Volume= 0.653 af, Depth> 4.66" Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv., Time Span= 0.00-200.00 hrs, dt= 0.01 hrs MN-RPBCWD Snowmelt_10d_100yr RPBCWD-Snowmelt Rainfall=7.20" Area (ac) CN Description 1.680 83 1/4 acre lots, 38% imp, HSG C 0.000 87 1/4 acre lots, 38% imp, HSG D 1.680 83 Weighted Average 1.042 74 62.00% Pervious Area 0.638 98 38.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 14.3 150 0.0200 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 2.87" 1.2 660 0.0300 9.12 11.19 Pipe Channel, 15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31' n= 0.013 Concrete pipe, bends & connections 15.5 810 Total Subcatchment 1: Proposed 1A Runoff Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MN-RPBCWD Snowmelt_10d_100yr RPBCWD-Snowmelt Rainfall=7.20" Runoff Area=1.680 ac Runoff Volume=0.653 af Runoff Depth>4.66" Flow Length=810' Tc=15.5 min CN=74/98 0.26 cfs Proposed Routing - Arbor Glen MN-RPBCWD Snowmelt_10d_100yr RPBCWD-Snowmelt Rainfall=7.20"ARBORGLEN 0420201 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 32HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Subcatchment 2: PROPOSED Runoff = 0.12 cfs @ 121.35 hrs, Volume= 0.256 af, Depth> 2.93" Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv., Time Span= 0.00-200.00 hrs, dt= 0.01 hrs MN-RPBCWD Snowmelt_10d_100yr RPBCWD-Snowmelt Rainfall=7.20" Area (ac) CN Description 1.000 65 Brush, Good, HSG C 0.050 98 Water Surface, HSG C 1.050 67 Weighted Average 1.000 65 95.24% Pervious Area 0.050 98 4.76% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 13.1 300 0.1000 0.38 Sheet Flow, Rear Yard Grass: Short n= 0.150 P2= 2.87" Subcatchment 2: PROPOSED Runoff Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)0.125 0.12 0.115 0.11 0.105 0.1 0.095 0.09 0.085 0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 MN-RPBCWD Snowmelt_10d_100yr RPBCWD-Snowmelt Rainfall=7.20" Runoff Area=1.050 ac Runoff Volume=0.256 af Runoff Depth>2.93" Flow Length=300' Slope=0.1000 '/' Tc=13.1 min CN=65/98 0.12 cfs Proposed Routing - Arbor Glen MN-RPBCWD Snowmelt_10d_100yr RPBCWD-Snowmelt Rainfall=7.20"ARBORGLEN 0420201 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 33HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Subcatchment 3S: Proposed 1B Runoff = 0.49 cfs @ 121.40 hrs, Volume= 1.208 af, Depth> 4.66" Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv., Time Span= 0.00-200.00 hrs, dt= 0.01 hrs MN-RPBCWD Snowmelt_10d_100yr RPBCWD-Snowmelt Rainfall=7.20" Area (ac) CN Description 3.110 83 1/4 acre lots, 38% imp, HSG C 0.000 87 1/4 acre lots, 38% imp, HSG D 3.110 83 Weighted Average 1.928 74 62.00% Pervious Area 1.182 98 38.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.2 256 0.0500 0.28 Sheet Flow, Grass: Short n= 0.150 P2= 2.87" 1.1 660 0.0300 10.30 18.19 Pipe Channel, RCP_Round 18" 18.0" Round Area= 1.8 sf Perim= 4.7' r= 0.38' n= 0.013 Concrete pipe, bends & connections 16.3 916 Total Subcatchment 3S: Proposed 1B Runoff Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD Snowmelt_10d_100yr RPBCWD-Snowmelt Rainfall=7.20" Runoff Area=3.110 ac Runoff Volume=1.208 af Runoff Depth>4.66" Flow Length=916' Tc=16.3 min CN=74/98 0.49 cfs Proposed Routing - Arbor Glen MN-RPBCWD Snowmelt_10d_100yr RPBCWD-Snowmelt Rainfall=7.20"ARBORGLEN 0420201 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 34HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Pond 2P: POND A Inflow Area = 4.790 ac, 38.00% Impervious, Inflow Depth > 4.66" for RPBCWD-Snowmelt event Inflow = 0.75 cfs @ 121.36 hrs, Volume= 1.861 af Outflow = 0.74 cfs @ 121.52 hrs, Volume= 1.592 af, Atten= 1%, Lag= 9.3 min Primary = 0.72 cfs @ 121.52 hrs, Volume= 1.340 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Tertiary = 0.02 cfs @ 47.67 hrs, Volume= 0.252 af Routing by Sim-Route method, Time Span= 0.00-200.00 hrs, dt= 0.01 hrs Peak Elev= 899.89' @ 121.52 hrs Surf.Area= 0 sf Storage= 12,379 cf Plug-Flow detention time= 1,248.9 min calculated for 1.592 af (86% of inflow) Center-of-Mass det. time= 644.8 min ( 7,998.1 - 7,353.3 ) Volume Invert Avail.Storage Storage Description #1 895.99' 25,003 cf Custom Stage Data Listed below Elevation Cum.Store (feet) (cubic-feet) 895.99 0 896.00 4,000 898.00 8,500 900.00 12,600 902.00 17,500 904.00 22,800 910.00 25,003 Device Routing Invert Outlet Devices #1 Device 2 899.50'Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 0.00 2.30 2.30 6.00 Width (feet) 0.90 0.90 4.00 4.00 #2 Primary 898.00'18.0" Round RCP_Round 18" L= 80.0' RCP, rounded edge headwall, Ke= 0.100 Inlet / Outlet Invert= 898.00' / 888.00' S= 0.1250 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.77 sf #3 Secondary 904.00'Land EOF, Cv= 2.62 (C= 3.28) Head (feet) 0.00 3.00 Width (feet) 5.00 5.00 #4 Tertiary 896.00'Similation for Irrigation Draw Down Head (feet) 0.00 0.01 10.00 Disch. (cfs) 0.000 0.020 0.020 Proposed Routing - Arbor Glen MN-RPBCWD Snowmelt_10d_100yr RPBCWD-Snowmelt Rainfall=7.20"ARBORGLEN 0420201 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 35HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Primary OutFlow Max=0.72 cfs @ 121.52 hrs HW=899.89' TW=0.00' (Dynamic Tailwater) 2=RCP_Round 18" (Passes 0.72 cfs of 12.40 cfs potential flow) 1=Custom Weir/Orifice (Weir Controls 0.72 cfs @ 2.05 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=895.99' TW=0.00' (Dynamic Tailwater) 3=Land EOF ( Controls 0.00 cfs) Tertiary OutFlow Max=0.02 cfs @ 47.67 hrs HW=896.01' TW=0.00' (Dynamic Tailwater) 4=Similation for Irrigation Draw Down (Custom Controls 0.02 cfs) Pond 2P: POND A Inflow Outflow Primary Secondary Tertiary Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=4.790 ac Peak Elev=899.89' Storage=12,379 cf 0.75 cfs 0.74 cfs 0.72 cfs 0.00 cfs 0.02 cfs Proposed Routing - Arbor Glen MN-RPBCWD Snowmelt_10d_100yr RPBCWD-Snowmelt Rainfall=7.20"ARBORGLEN 0420201 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 36HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Pond WP: WETLAND P [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 5.840 ac, 32.02% Impervious, Inflow Depth > 3.28" for RPBCWD-Snowmelt event Inflow = 0.84 cfs @ 121.49 hrs, Volume= 1.596 af Primary = 0.84 cfs @ 121.50 hrs, Volume= 1.596 af, Atten= 0%, Lag= 0.6 min Routing by Sim-Route method, Time Span= 0.00-200.00 hrs, dt= 0.01 hrs Pond WP: WETLAND P Inflow Primary Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)0.9 0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=5.840 ac 0.84 cfs 0.84 cfs Proposed Routing - Arbor Glen MN-RPBCWD Snowmelt_10d_100yr RPBCWD-Snowmelt Rainfall=7.20"ARBORGLEN 0420201 Printed 4/21/2017Prepared by Sathre-Bergquist, Inc. Page 37HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Link 10L: Irrigation System Inflow = 0.02 cfs @ 47.67 hrs, Volume= 0.252 af Primary = 0.02 cfs @ 47.68 hrs, Volume= 0.252 af, Atten= 0%, Lag= 0.6 min Primary outflow = Inflow, Time Span= 0.00-200.00 hrs, dt= 0.01 hrs Link 10L: Irrigation System Inflow Primary Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)0.022 0.021 0.02 0.019 0.018 0.017 0.016 0.015 0.014 0.013 0.012 0.011 0.01 0.009 0.008 0.007 0.006 0.005 0.004 0.003 0.002 0.001 0 0.02 cfs 0.02 cfs