I’m having trouble with my Dam Break scenario. The model includes the dam and several culverts. My cross section, dam, culvert and boundary condition data are all correct but when I run the unsteady flow model an absurdly high water surface elevation results (like 60,000 feet above grade). I feel like it may have something to do with the time step and upstream/downstream cross section spacing on the dam and culverts but am not sure.
Any help would be appreciated. Thank you.