I am working on a project where a previous phases pond's outflow is controlled by a flow control manhole, which outlets into an existing basin. I am now designing a new pond further downstream and need to account for the runoff of the existing basin upstream as well as the flow that is released...
Is there a way to place drywells as an outflow structure of a pond? Here we are required to place the rim of drywells 0.5' above the bottom of pond elevation.