I found a different method to complete this. I created a hydrograph of the lowest discharge value at each specified head of the new discharge pipe and the weir structure. I took this hydrograph and added it as it's own outlet on the OCS. Results look correct and expected. Thanks for you help though!
I have it modeled exactly as you described. My error occurs when I run the 100-year event as the outlet pipes will then be the controlling outlet device, not the weir wall and overflow grate. So the zero-volume "Pond" node that my dual outlet pipes are in is peaking above the HWL of the main...
Scenario I'm dealing with:
I have a wet sed basin with an outlet control structure. the OCS has an internal weir wall, overflow grate, and discharges via 36" pipe. The discharge out of the 36" pipe is causing some erosion concerns on an adjacent golf course. The city is wanting another...
