Thanks for your help. I believe I'm getting closer to understanding and modeling this field correctly.
The field is surrounded by concrete curbing in order to anchor the turf, so it should act like a stand alone pond and I understand your direction for selecting pond outlets and control...
Thanks psmart.
I agree that CN should be 98, because these fields drain so fast vertically that I have never seen them sheet flow (even in some real downpours).
The problem I have is picking (and justifying) a Tc value. My assumption is that I need a way to calculate the the Tc for the water...
What is the proper way to model a synthetic turf sports field using HydroCAD?
A typical field design consists of a 2" sand/rubber infill turf layer, then 8" stone base layer with flat panel drains (spaced every 20-ft) located on the bottom of the base layer. The flat panel drains then...
Thanks TerryScan
Yes..I guess my question was more of a CN value question.
We are not taking credit for infiltration, as the dry basin is for attenuation of peak flows only. I will treat the dry basin bottom as impervious for my model.
We are working on a project with a wet basin and a detention basin. They are not connected and are at different design points.
With the wet pond model, I have the permanent pool area as impervious area. If the detention basin drains dry, do I model the bottom area of the basin also as...
Thanks BDAnderson...
I thought of that, but modeling the culvert as a reach does not take into acount the entrance losses (k value) from the culvert's entrance headwall.
What if I model the upgradient stream as a reach, then model the culvert as a pond with no storage and with the outlet...
I have to design a 400ft long box culvert. We have a stream that will transition into the box culvert as it travels under pavement and then transitions back into a stream. How do I properly model this in HydroCAD or PondPack?