Multiple Linearization Flow Routing Model

Abstract

Multiple linearization is a convolution routing technique which allows variations in wave celerity and damping with discharge. By treating the input to a routing reach as a set of inputs to several subsystems, rather than as a single system, from 10-50% gains in root mean square accuracy can be obtained when routing hourly discharge values. Significant visual improvement in the arrival time of low flows is achieved. Little gain in accuracy is possible when routing daily discharges unless 2-day or 3-day differences in arrival time occur.