Find Storage-outflow function for a culvert detention pond
Find Storage-outflow function for a culvert detention pond
(OP)
I'm trying to follow an example from Ven Te Chow's Applied Hydrology (p247) to determine the inflow/outflow vs time of a detention pond in order to size the pipe culvert.
In the book, the storage-outflow graph its a given, and I don't know how to model that for my pond.
The pond is (aprox) a triangular prism in a rural area, with a single CMP culvert (submerged inlet). I have the storm info and I've been able to calculate peak discharge for the culvert based on "Design of Small Dams" (US Department of the Interior publication). But I need to model the progress of a storm.
I've found a Q=CA(2gH)^(1/2) formula somewhere but I don't think it's appropriate.
I'm very new doing this (and a bit out of my field) so I don't have any software, so if you also happen to know of some free ones for helping me with this, I'd be grateful.
thanks in advanced
In the book, the storage-outflow graph its a given, and I don't know how to model that for my pond.
The pond is (aprox) a triangular prism in a rural area, with a single CMP culvert (submerged inlet). I have the storm info and I've been able to calculate peak discharge for the culvert based on "Design of Small Dams" (US Department of the Interior publication). But I need to model the progress of a storm.
I've found a Q=CA(2gH)^(1/2) formula somewhere but I don't think it's appropriate.
I'm very new doing this (and a bit out of my field) so I don't have any software, so if you also happen to know of some free ones for helping me with this, I'd be grateful.
thanks in advanced





RE: Find Storage-outflow function for a culvert detention pond
Then design a pond volume and outlet structure to attenuate the flows down to some desired point (perhaps a known outflow, etc.)
HEC-HMS and EPA-SWMM are free programs that will allow you to "design" and analyze a pond/reservoir and it's outlet works. However, each one can get somewhat complex, so be careful.
RE: Find Storage-outflow function for a culvert detention pond
RE: Find Storage-outflow function for a culvert detention pond