, and NassrinJ.Al-Mansori

Gates and weirs have been used extensively for flow control and discharge measurement in open channel flow. Works concerning the use of sluice gates as a discharge measurement structure may be found in, Rajaratnam (1977), French(1986),and Swamee (1992). Many researchers had developed a generalized discharge equation for sluice gates, Abdel-Azim et al. (2002), Bos (1989), and Munson et al.(1994). Weirs and gates may be combined together in one devic