Some Problems of Flood Analysis

Abstract

This paper is a continuation of a previous one in which a stochastic model for analyzing excessive streamflows was presented. The model was based on the assumption that flood peak exceedances are independent, identically distributed random variables and that their occurrence is subject to the Poisson law. In the present paper a model is developed for nonidentically distributed exceedances on the assumption that only those exceedances during a particular season may be considered identically distributed. From this hypothesis the distribution function of the maximum flood peak exceedance in an arbitrary interval of time (0, t ] is determined. The results are then applied to the 72‐year record of the Greenbrier River at Alderson, West Virginia. The theoretical and observed results agree reasonably well.