Sloping Dam Crest

[dutchman]

We have modeled a 2,150 long dam crest with constant elevation.
Actually there is a depressed area (fuseplug) in the crest, approximately 200 feet long tapering from 0 feet to 3.5 feet below the dam crest. This depressed area was now modeled using the sloping crest option. When running a no breach scenario the computed reservoir elevation does not overtop the embankment anymore. With a constant elevation we had overtopping by about 4.6 feet. I cannot believe this low area conveys all the flow.
Any ideas for modeling this?
Thanks
Barend Meiling

[Chris Maeder]

Berand:

You could model the depressed area of the dam crest as part of the spillway to see if it actually passes the routed hydrograph without overtopping the dam crest embankment.

Let me know if I can assist anymore.

Sincerely,

Chris E. Maeder, M.S., P.E.
Senior Technical Engineer
chris.maeder@bossintl.com