Subbasin Computations

The Recompute Properties command is used to compute the hydrologic properties (attributes) of stormwater elements (subbasin polygons and reach polylines). Refer to this article in our knowledge base t…

The Compute Reach Parameters command of GeoHECHMS allows the user to compute invert elevation, slope, length, and other parameters using reach alignment along the elevation terrain surface. These para…

Subbasins define the drainage area polygons that produce runoff to other elements in the model. CivilGEO's software automatically calculates and assigns the drainage area for the subbasins from the de…

An impervious surface is a hard surface that prevents or stops water from entering the soil mantle or causes water to run off the surface in higher amounts or at a faster rate. Common impervious surfa…