Prediction of Runoff Volumes in Butler Valley, Arizona

Abstract

An empirical-stochastical model for predicting runoff volumes in Butler Valley, Arizona, has been suggested. The model uses the statistical parameters of rainfall in a few surrounding stations in order to calculate the recurrence interval of rainfall above the study area. The model also considers the elevation effect of the mountains. The model assumes a linear relationships between annual rainfall and annual runoff for a given watershed taking into account the reduction in runoff efficiency with an increase in catchment size. A procedural approach and an example for using the model are presented.