How to Calculate The W – Index?
The W – Index calculator uses W-Index=Precipitation-Surface Runoff-Depression and Interception Losses/Time Period of Runoff to calculate the W-Index, The The W – Index formula is defined as the average infiltration rate during the time when the rainfall intensity exceeds the infiltration rate. W-Index and is denoted by W symbol.
How to calculate The W – Index using this online calculator? To use this online calculator for The W – Index, enter Precipitation (P), Surface Runoff (S), Depression and Interception Losses (Ia) and Time Period of Runoff (T_{f}) and hit the calculate button. Here is how the The W – Index calculation can be explained with given input values -> -0.095002 = 0.005-0.1-0.06/28800.