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Storm Water Management Model (SWMM)
• Rainfall-Runoff simulation model– Time-varying rainfall– Evaporation/infiltration– Spatial variability
• Hydraulic Model– Route runoff through drainage system network– Unsteady flow
Results: SWMM
Scenerio Avg. Flow (cms) Max Flow (cms) Total Volume (m3)
Present 3.14 19.20 282.11
Green Roofs 2.67 18.07 240.33
Green Roofs + Pervious Pavement 2.67 18.07 240.33
Pervious Pavement 2.77 18.25 249.37
Rainwater Harvesting 2.50 16.81 224.72
Rainwater Harvesting + Pervious Pavement 2.50 16.81 224.72
Detention Pond 3.14 13.16 282.12
Event 16: 4.8 inches over ~24 hours
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