decreasing peak discharges

[kenn100]

Hi guys,

I am using hydrocad to model my pond and I am trying to reduce the peak discharges for the 2 yr, 10yr, 100 yrs storm to the pre-developement discharg rate.
The pond has a riser structure with 2 orifices at different elevations and a 24inch diam culvert outlet pipe (device 1).
I tried increasing elevations of the orifice and also reducing size but no luck.
I have attached a pdf of pond profile.
Any help will be appreciated.

 

[psmart]

To save everyone's time, please don't post the same question to more than one forum.

There have been several replies to your question at
thread162-226840


Peter Smart
HydroCAD Software

http://www.hydrocad.net

 

[kenn100]

Thanks.
I wasn't sure if I was in the right forum.