Water Resources Engineering2D
Stormwater Management - Theory & Concepts - Runoff Hydrograph
Detailed coverage of Stormwater Management including Urban Runoff, SCS Curve Number, Detention Basins, Low Impact Development (LID), and Culvert Design.
Open the complete lessonUrbanization Impact on Stormwater Hydrographs
Adjust the percentage of impervious area (pavement, roofs) to see how urbanization alters the natural hydrologic cycle. Notice how increased imperviousness causes a "flashier" response: a higher peak flow that arrives much sooner, increasing flood risk.
10%
Rural (10%)Urban (90%)
25
50
Peak Flow (Qp)
69.4 m³/s69.4 m³/s
Time to Peak (Tp)
3.0 hrs3.0 hrs
Runoff Volume Increase
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