Webbthe following equation: where: P = rainfall, in inches (use 1.0" or 0.9" for the Water Quality Storm) Qa = runoff volume, in inches (equal to P×Rv) Note: The above equation is … Webb19 aug. 2024 · The rational formula is expressed as where Qp = peak runoff rate (m3/s, ft3/s) C = dimensionless runoff coefficient (see Table 3-9) I = average rainfall intensity (mm/hr, in/hr) for a duration of the time of concentration (tc) A = drainage area (km2, acres) K = conversion constant (0.28 in SI, 1 in English)
How to calculate surface runoff from SCS CURVE method?
WebbYou can compare the storm rainfall with the water runoff by viewing the Runoff Hydrograph - Unit Hydrograph Summary in the reports section of PondPack. In this Unit Hydrograph … Webb17 feb. 2024 · The SCS equation can be expressed based on the principle of saturated excess runoff mechanism, a very good determination coefficient(R 2) such as 0.97, 0.94 … ritz carlton kapalua washing machine
An introduction to the curvenumber R package for the calculation …
WebbThe Soil Conservation Services (SCS) runoff model is useful for evolving the runoff potential for every feature utilizing different antecedent moisture condition (AMC) to … WebbThe Soil Conservation Service (SCS) Curve Number (CN) model estimates precipitation excess as a function of cumulative precipitation, soil cover, land use, and antecedent … WebbThese values are computed as follows: Where: Tp = time to peak (hrs) Tc = time of concentration (hrs) D = time interval (hrs) Tc = 1.67 x Lag Time (L) Where: L = lag time (hrs) l = hydraulic length (ft) S = (1000 / CN) – 10 Y = … ritz carlton in tysons corner