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6.2 Exisitng Conditions1E EXISTING WE WETLAND EX Routing Diagram for ARBORGLEN 05112017 Prepared by Sathre-Bergquist, Inc., Printed 5/16/2017 HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Subcat Reach Pond Link Existing Conditions ARBORGLEN 05112017 Printed 5/16/2017Prepared 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) 3.200 70 Brush, Fair, HSG C (1E) 2.800 73 Brush, Good, HSG D (1E) 6.000 71 TOTAL AREA Existing Conditions ARBORGLEN 05112017 Printed 5/16/2017Prepared 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 3.200 HSG C 1E 2.800 HSG D 1E 0.000 Other 6.000 TOTAL AREA Existing Conditions ARBORGLEN 05112017 Printed 5/16/2017Prepared 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 3.200 0.000 0.000 3.200 Brush, Fair 1E 0.000 0.000 0.000 2.800 0.000 2.800 Brush, Good 1E 0.000 0.000 3.200 2.800 0.000 6.000 TOTAL AREA Existing Conditions MN-RPBCWD_v1_Atlas14_24-hr2y_S1 2y 24hr Rainfall=2.87"ARBORGLEN 05112017 Printed 5/16/2017Prepared by Sathre-Bergquist, Inc. Page 5HydroCAD® 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=6.000 ac 0.00% Impervious Runoff Depth=0.69"Subcatchment 1E: EXISTING Flow Length=620' Tc=13.9 min CN=71/0 Runoff=4.45 cfs 0.343 af Inflow=4.45 cfs 0.343 afPond WE: WETLAND EX Primary=4.45 cfs 0.343 af Total Runoff Area = 6.000 ac Runoff Volume = 0.343 af Average Runoff Depth = 0.69" 100.00% Pervious = 6.000 ac 0.00% Impervious = 0.000 ac Existing Conditions MN-RPBCWD_v1_Atlas14_24-hr2y_S1 2y 24hr Rainfall=2.87"ARBORGLEN 05112017 Printed 5/16/2017Prepared by Sathre-Bergquist, Inc. Page 6HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Subcatchment 1E: EXISTING Runoff = 4.45 cfs @ 12.21 hrs, Volume= 0.343 af, Depth= 0.69" 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 3.200 70 Brush, Fair, HSG C 2.800 73 Brush, Good, HSG D 6.000 71 Weighted Average 6.000 71 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.8 300 0.0800 0.39 Sheet Flow, Range n= 0.130 P2= 2.87" 1.1 320 0.1000 4.74 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 13.9 620 Total Subcatchment 1E: EXISTING Runoff Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)4 3 2 1 0 MN-RPBCWD_v1_Atlas14_24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=6.000 ac Runoff Volume=0.343 af Runoff Depth=0.69" Flow Length=620' Tc=13.9 min CN=71/0 4.45 cfs Existing Conditions MN-RPBCWD_v1_Atlas14_24-hr2y_S1 2y 24hr Rainfall=2.87"ARBORGLEN 05112017 Printed 5/16/2017Prepared by Sathre-Bergquist, Inc. Page 7HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Pond WE: WETLAND EX [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 6.000 ac, 0.00% Impervious, Inflow Depth = 0.69" for 2y 24hr event Inflow = 4.45 cfs @ 12.21 hrs, Volume= 0.343 af Primary = 4.45 cfs @ 12.22 hrs, Volume= 0.343 af, Atten= 0%, Lag= 0.6 min Routing by Sim-Route method, Time Span= 0.00-200.00 hrs, dt= 0.01 hrs Pond WE: WETLAND EX Inflow Primary Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)4 3 2 1 0 Inflow Area=6.000 ac 4.45 cfs 4.45 cfs Existing Conditions MN-RPBCWD_v1_Atlas14_24-hr10y_S1 10y 24hr Rainfall=4.27"ARBORGLEN 05112017 Printed 5/16/2017Prepared by Sathre-Bergquist, Inc. Page 8HydroCAD® 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=6.000 ac 0.00% Impervious Runoff Depth=1.58"Subcatchment 1E: EXISTING Flow Length=620' Tc=13.9 min CN=71/0 Runoff=11.77 cfs 0.791 af Inflow=11.77 cfs 0.791 afPond WE: WETLAND EX Primary=11.77 cfs 0.791 af Total Runoff Area = 6.000 ac Runoff Volume = 0.791 af Average Runoff Depth = 1.58" 100.00% Pervious = 6.000 ac 0.00% Impervious = 0.000 ac Existing Conditions MN-RPBCWD_v1_Atlas14_24-hr10y_S1 10y 24hr Rainfall=4.27"ARBORGLEN 05112017 Printed 5/16/2017Prepared by Sathre-Bergquist, Inc. Page 9HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Subcatchment 1E: EXISTING Runoff = 11.77 cfs @ 12.20 hrs, Volume= 0.791 af, Depth= 1.58" 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 3.200 70 Brush, Fair, HSG C 2.800 73 Brush, Good, HSG D 6.000 71 Weighted Average 6.000 71 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.8 300 0.0800 0.39 Sheet Flow, Range n= 0.130 P2= 2.87" 1.1 320 0.1000 4.74 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 13.9 620 Total Subcatchment 1E: EXISTING Runoff Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)13 12 11 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=6.000 ac Runoff Volume=0.791 af Runoff Depth=1.58" Flow Length=620' Tc=13.9 min CN=71/0 11.77 cfs Existing Conditions MN-RPBCWD_v1_Atlas14_24-hr10y_S1 10y 24hr Rainfall=4.27"ARBORGLEN 05112017 Printed 5/16/2017Prepared by Sathre-Bergquist, Inc. Page 10HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Pond WE: WETLAND EX [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 6.000 ac, 0.00% Impervious, Inflow Depth = 1.58" for 10y 24hr event Inflow = 11.77 cfs @ 12.20 hrs, Volume= 0.791 af Primary = 11.77 cfs @ 12.21 hrs, Volume= 0.791 af, Atten= 0%, Lag= 0.6 min Routing by Sim-Route method, Time Span= 0.00-200.00 hrs, dt= 0.01 hrs Pond WE: WETLAND EX Inflow Primary Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=6.000 ac 11.77 cfs 11.77 cfs Existing Conditions MN-RPBCWD_v1_Atlas14_24-hr100y_S1 100y 24hr Rainfall=7.41"ARBORGLEN 05112017 Printed 5/16/2017Prepared by Sathre-Bergquist, Inc. Page 11HydroCAD® 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=6.000 ac 0.00% Impervious Runoff Depth=4.07"Subcatchment 1E: EXISTING Flow Length=620' Tc=13.9 min CN=71/0 Runoff=29.38 cfs 2.036 af Inflow=29.38 cfs 2.036 afPond WE: WETLAND EX Primary=29.38 cfs 2.036 af Total Runoff Area = 6.000 ac Runoff Volume = 2.036 af Average Runoff Depth = 4.07" 100.00% Pervious = 6.000 ac 0.00% Impervious = 0.000 ac Existing Conditions MN-RPBCWD_v1_Atlas14_24-hr100y_S1 100y 24hr Rainfall=7.41"ARBORGLEN 05112017 Printed 5/16/2017Prepared by Sathre-Bergquist, Inc. Page 12HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Subcatchment 1E: EXISTING Runoff = 29.38 cfs @ 12.19 hrs, Volume= 2.036 af, Depth= 4.07" 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 3.200 70 Brush, Fair, HSG C 2.800 73 Brush, Good, HSG D 6.000 71 Weighted Average 6.000 71 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.8 300 0.0800 0.39 Sheet Flow, Range n= 0.130 P2= 2.87" 1.1 320 0.1000 4.74 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 13.9 620 Total Subcatchment 1E: EXISTING Runoff Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14_24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=6.000 ac Runoff Volume=2.036 af Runoff Depth=4.07" Flow Length=620' Tc=13.9 min CN=71/0 29.38 cfs Existing Conditions MN-RPBCWD_v1_Atlas14_24-hr100y_S1 100y 24hr Rainfall=7.41"ARBORGLEN 05112017 Printed 5/16/2017Prepared by Sathre-Bergquist, Inc. Page 13HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Pond WE: WETLAND EX [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 6.000 ac, 0.00% Impervious, Inflow Depth = 4.07" for 100y 24hr event Inflow = 29.38 cfs @ 12.19 hrs, Volume= 2.036 af Primary = 29.38 cfs @ 12.20 hrs, Volume= 2.036 af, Atten= 0%, Lag= 0.6 min Routing by Sim-Route method, Time Span= 0.00-200.00 hrs, dt= 0.01 hrs Pond WE: WETLAND EX Inflow Primary Hydrograph Time (hours) 2001901801701601501401301201101009080706050403020100Flow (cfs)32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=6.000 ac 29.38 cfs 29.38 cfs Existing Conditions MN-RPBCWD Snowmelt_10d_100yr RPBCWD-Snowmelt Rainfall=7.20"ARBORGLEN 0511201 Printed 5/16/2017Prepared 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=6.000 ac 0.00% Impervious Runoff Depth>3.35"Subcatchment 1E: EXISTING Flow Length=620' Tc=13.9 min CN=71/0 Runoff=0.76 cfs 1.674 af Inflow=0.76 cfs 1.674 afPond WE: WETLAND EX Primary=0.76 cfs 1.674 af Total Runoff Area = 6.000 ac Runoff Volume = 1.674 af Average Runoff Depth = 3.35" 100.00% Pervious = 6.000 ac 0.00% Impervious = 0.000 ac Existing Conditions MN-RPBCWD Snowmelt_10d_100yr RPBCWD-Snowmelt Rainfall=7.20"ARBORGLEN 0511201 Printed 5/16/2017Prepared by Sathre-Bergquist, Inc. Page 15HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Subcatchment 1E: EXISTING Runoff = 0.76 cfs @ 121.38 hrs, Volume= 1.674 af, Depth> 3.35" 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 3.200 70 Brush, Fair, HSG C 2.800 73 Brush, Good, HSG D 6.000 71 Weighted Average 6.000 71 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.8 300 0.0800 0.39 Sheet Flow, Range n= 0.130 P2= 2.87" 1.1 320 0.1000 4.74 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 13.9 620 Total Subcatchment 1E: EXISTING Runoff 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 MN-RPBCWD Snowmelt_10d_100yr RPBCWD-Snowmelt Rainfall=7.20" Runoff Area=6.000 ac Runoff Volume=1.674 af Runoff Depth>3.35" Flow Length=620' Tc=13.9 min CN=71/0 0.76 cfs Existing Conditions MN-RPBCWD Snowmelt_10d_100yr RPBCWD-Snowmelt Rainfall=7.20"ARBORGLEN 0511201 Printed 5/16/2017Prepared by Sathre-Bergquist, Inc. Page 16HydroCAD® 10.00-15 s/n 03665 © 2015 HydroCAD Software Solutions LLC Summary for Pond WE: WETLAND EX [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 6.000 ac, 0.00% Impervious, Inflow Depth > 3.35" for RPBCWD-Snowmelt event Inflow = 0.76 cfs @ 121.38 hrs, Volume= 1.674 af Primary = 0.76 cfs @ 121.39 hrs, Volume= 1.674 af, Atten= 0%, Lag= 0.6 min Routing by Sim-Route method, Time Span= 0.00-200.00 hrs, dt= 0.01 hrs Pond WE: WETLAND EX Inflow Primary 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=6.000 ac 0.76 cfs 0.76 cfs