I need some help with HEC-HMS. I am modeling a drainage area with two sub-basins in Hec-HMS. Each connect to a Reach and the two Reaches connect to a joint, and then an outfall. Using Muskingum-Cunge routing method for the Reaches.
But one reach has zero discharge even though the upstream sub-basin has output flow (112 cfs).
I am not sure how to fix this. The Reach is a trapezoidal channel - 10ft bottom width at 4:1 side slopes for 500 Liner feet.
When i model thesame reach in Hydrocad, i get an outflow, but HEC-HMS shows zero outflow.
But one reach has zero discharge even though the upstream sub-basin has output flow (112 cfs).
I am not sure how to fix this. The Reach is a trapezoidal channel - 10ft bottom width at 4:1 side slopes for 500 Liner feet.
When i model thesame reach in Hydrocad, i get an outflow, but HEC-HMS shows zero outflow.