Statistical Analysis of the Daily Streamflow Hydrograph and a Probability Distribution of the Interarrival Times of Peak Flows-Application to Indiana

摘要

A periodic statistical analysis of the daily streamflows at five gaging stations in Indiana was performed to gain insight into the stochastic structure which governs the daily stream process. This analysis made use of the mean function and the covariance function of the daily streamflows as well as the probability distribution of the interarrival times between peak discharges and the probability distribution of the times to the peak discharges. It is shown that the daily streamflow process is annually periodic in all its statistic functions and that the persistence properties and the recession decay rates change with the state of the watershed storage and with time.