Hydrocad weighed CN for MRC calculations

[_mwill2023]

Hello looking for help from someone experienced with HydroCAD.
I am modeling MRC (managed release concept) basins in PA which state I cannot use a weighted CN for inflow calculations to the MRC basin. I know I can turn weighted CN off for my entire file but I really only care about the weighted CN for the inflow hydrograph to my basin. In the past I have created two separate inflow hydrographs. One for impervious area and one for pervious areas as I did not see a way to turn off the weighed CN for one sub catchment.

Is there any other way to get around this? I have always used weighted CN for my calculations so it makes me nervous to turn it off for my whole file. looking for feedback/opinions on this. Thanks.

 

[psmart]

As you stated, you can turn off weighted CN for the entire file, or use separate subcatchments.

For details see

http://www.hydrocad.net/curvenumber.htm

BTW, this should be posted to the HydroCAD forum.


Peter Smart
HydroCAD Software

http://www.hydrocad.net