Infiltration Trench with higher Outflow than Inflows
Infiltration Trench with higher Outflow than Inflows
(OP)
Hello all...
I have a small drainage area (1.60 acres) sheet flowing into an infiltration trench that is 3' wide by 155' long. I have added exfiltration as discarded and the primary outfall is the top of the trench entered as a custon wier. The water surface elevations for all storm events stay below the top storage elevation.
When I run the program it is error free. BUT...my 10 year storm envent inflow is 0.65 CFS, outflow is 0.68 CFS, discarded 0.01 CFS, and primary 0.66 CFS. Why is the total outflow greater than the inflow?
My water quality storm and 2 year storm the inflow is greater than the outflow. The 100 year storm is equal.
Any ideas?
I have a small drainage area (1.60 acres) sheet flowing into an infiltration trench that is 3' wide by 155' long. I have added exfiltration as discarded and the primary outfall is the top of the trench entered as a custon wier. The water surface elevations for all storm events stay below the top storage elevation.
When I run the program it is error free. BUT...my 10 year storm envent inflow is 0.65 CFS, outflow is 0.68 CFS, discarded 0.01 CFS, and primary 0.66 CFS. Why is the total outflow greater than the inflow?
My water quality storm and 2 year storm the inflow is greater than the outflow. The 100 year storm is equal.
Any ideas?





RE: Infiltration Trench with higher Outflow than Inflows
If you have further questions, you may want to send the project file to HydroCAD support.
Peter Smart
HydroCAD Software
www.hydrocad.net
RE: Infiltration Trench with higher Outflow than Inflows
I guess my next step is to send the project file over...
RE: Infiltration Trench with higher Outflow than Inflows
Peter Smart
HydroCAD Software
www.hydrocad.net
RE: Infiltration Trench with higher Outflow than Inflows
Mike McCann
MMC Engineering
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