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Re: elevation of water when failure of dam commences
I am trying to model a single reach with a single dam using option 1. I took out all elements (boundary conditions) that made the model more complicated. I did get a hydrograph with a smaller inflow (but also without a dam break). However, when I increased the inflow I get convergence errors. Specifically, I get negative values for the stage (at the hydrograph) and a message that my top widths need to be extended (which is questionable because I have at least 120 feet of top width height and I am not expecting such a high stage). I have also decrease the dmx, but I get the same errors. Do you have any suggestions?
Also (attached is my input file).
Thank you for any pointers you could provide.
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