HFR Method for Large Storm Events

Katie RoseSurface Water Term Project

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

SWMM Interface

West Campus SWMM Model

692 Nodes806 Links1 Storage Unit (~73,500 cubic meters)

SWMM Steps:

Import original file Change dates

Create tool to run data

RUN

SWMM Automation: MATLAB

Hydrologic Footprint Residence (HFR)

Hydrologic Footprint Residence (HFR)

HFR Results

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

Present

Detention Pond

Event 71: 6.5 inches over ~10 hours

Future Work

SWMM- fix HMS inputs

HFR

Small Literature Review

QUESTIONS???