Operational issues and safety
Better spreadsheets provide coordinates for the downstream profile (often following the USBR or WES standard shapes) to prevent sub-atmospheric pressure and cavitation.
: Often consists of two or three circular arcs that transition smoothly into the vertical upstream dam face. 3. Design Parameters & Checks Description / Standard Practice Spillway Height ( ) Height from the riverbed to the crest. If , the velocity of approach is usually negligible. Energy Dissipation