Discharge-Storage Curve
Discharge-Storage Curve
(OP)
I have set up a routing diagram, entered all the data, run the program and obtained what appears to be realistic results. But when I check the nodes individually, the discharge-storage curve for a grass-swale <reach> shows the starting elevation same as the invert elevation, then it extrapolates...
A portion of the routing diagram consists of two sub-catchments routed to a grass swale then the swale flows into a detention pond
I've run the model and checked if any of the reaches, especially this one, was "flooded" but I don't get any errors of this sort. What could be causing this?
A portion of the routing diagram consists of two sub-catchments routed to a grass swale then the swale flows into a detention pond
I've run the model and checked if any of the reaches, especially this one, was "flooded" but I don't get any errors of this sort. What could be causing this?
Talk To Other Members
RE: Discharge-Storage Curve
For a reach, the rating curve will extend from the invert to the top of the defined channel. Extrapolation will occur only if the WSE exceeds the top of the channel, and a warning message will be generated. Since you have no warning, the model is not extrapolating, and is operating within the predefined rating curve.
BTW, there are two rating curves: Stage-Discharge and Stage-Storage. There is no Discharge-Storage curve.
If you have further questions please post the HydroCAD project file or send it to HydroCAD support.
Peter Smart
HydroCAD Software
www.hydrocad.net