Flow accumulation

Flow accumulation
Flow accumulation is the next step in hydrologic modeling. Watersheds are defined spatially by the geomorphological property of drainage.

We can accumulate flow directions, the number of cells from which water flows to a cell are counted during the accumulation. Make the Flow Direction theme the active theme and select Hydro/Flow Accumulation from the menu. We get the Toka creek.

The algorithm is D8 flow accumulation. disturbed.land Raster map input layer or value containing the percent of disturbed land (i.e., croplands, and construction sites) where the raster or input value of 17 equals 17%. If no map or value is given, r.

This quantity can be used as a weight and a weighted flow accumulation performed in the same manner as the regular flow accumulation is done when constructing the watershed boundaries.

See also: Elevation, Digital, Area, Analysis, Model