In HydroCAD I would model the upgradient stream as a Reach with the appropriate inputs to model the stream characteristics, model the culvert as a second Reach with appropriate inputs to model the culvert characteristics, and then model the downgradient stream as a third Reach.
You'll have to...
Hello,
I'm curious to know how people determine anticipated stormwater inlet grate efficiencies resulting from grates clogging due to leaves and debris. I assume it is a function of longitudinal slope and inlet location (on a slope versus at a lowpoint).
Any ideas are appreciated!
Thanks,
Derek