Catchment Factor given Run-off in Inches by Lacey's Formula evaluator uses Catchment Factor = (-120*Monsoon Duration Factor*Runoff Depth in Inches for Lacey's Formula)/(Runoff Depth in Inches for Lacey's Formula*Rainfall Depth in Inches-Rainfall Depth in Inches*Rainfall Depth in Inches) to evaluate the Catchment Factor, The Catchment Factor given Run-off in Inches by Lacey's Formula is defined as topography, shape, size, soil type, and land use (paved or roofed areas). Catchment Factor is denoted by S symbol.
How to evaluate Catchment Factor given Run-off in Inches by Lacey's Formula using this online evaluator? To use this online evaluator for Catchment Factor given Run-off in Inches by Lacey's Formula, enter Monsoon Duration Factor (Fm), Runoff Depth in Inches for Lacey's Formula (RLI) & Rainfall Depth in Inches (RPI) and hit the calculate button.