Stormwater Calculation Spreadsheet
Stormwater Calculation Spreadsheet Rainfall (in): Area (sq ft): Slope (%): Roughness (n): 0.01 (Asphalt)0.02 (Concrete)0.03 (Grass) Calculate Introduction & Importance Stormwater calculation spreadsheets are essential tools for managing urban runoff, preventing flooding, and protecting water quality… EPA Stormwater Program –…