Hello!

I've got a swale modeled to a pond node. In reality the pond node is a Riprap area that provides some storage. The riprap discharges water through an asymmetrical weir (which is the warped edge of the rirap due to the cross slope in that area.. When modeling the real world available storage in the pond node, I got an error stating it could not perform the calculation due to there not being enough storage. Because there is no "real" available storage downstream of the riprap being that it is on a slope, I added 0.1-feet to my highest elevation in the elevation column and input 1,000,000 sf as the surface area to represent a free outfall situation. Running the model I got no errors, but the water surface elevation above the weir was within the area of fictitious storage. Is this an acceptable way to model stone storage riprap on a slope?

Thank you!