DuckEngineer
Civil/Environmental
I have a project that involves a dam with a 130 square mile watershed. Part of the project is to de-water the impoundment. I am trying to model what happens when a storm event hits during these draw downs (empty unit, partially full, full). I have my stage-storage table, a user-defined outlet of flow vs. depth (based on HEC-RAS), and regression flows at my point of interest. The regression flows use 24 hour precipitation values as a part of the formula, so I think applying an SCS 24 hour type 2 distribution is appropriate for my incoming events. Is there a way in HydroCAD to take the SCS hydrograph, apply the known peak flow (from regression), and let HydroCAD fill in the limbs of the hydrograph for routing purposes?