Frequency and Risk Analyses in Hydrology

3-parameter lognormal ALPHA annual maximum CALIFORNIA/SANTA CRUZ central moments CFS ON APR CFS ON AUG CFS ON DEC CFS ON JAN CFS ON JUL CFS ON NOV CFS ON OCT CFS ON SEP coefficient of skew coefficient of variation computed Corresponding Return Period CRUZ The University derived design flood error of estimate event magnitude extremal distribution flood frequency flows FORMAT frequency analysis frequency curve frequency factor function Hydrology log-Pearson type logarithms lognormal distribution MARYS RIVER maximum event maximum likelihood mean and standard mean annual method of moments N₂ normal distribution number of events occur parameters Pearson type plotting position probability distribution recorded events return period sample data standard deviation standard error standard normal deviate stations Statistics streamflow Substituting T-year event Table tion type I extremal type III distribution UNIVERSITY OF CALIFORNIA/SANTA values variable variance WRITE zero θα ав ак ах ахт Хт