“…Analytical studies of open-channel bed degradation include those by Lane (1948), Mostafa (1957), Tinney (1962), Breusers (1967), Komura and Simons (1967), Aksoy (1970Aksoy ( , 1971, Hales and others (1970), Komura (1971), Rzhanitzin andothers (1971), de Vries (1973), Hwang (1975), andStrand (1977). Special flume studies of bed degradation have been conducted by Schoklitsch (1950), Harrison (1950), Newton (1951), Ahmad (1953), Willis (1965), Garde and Hasan (1967), Ashida and Michiue (1971), and others.…”