Analytical Approach for Base Flow in Watershed Model PDF

Keywords

watershed, stream flow, river

Abstract

A relatively simple procedure to predict the base flow component of stream flow in a watershed is presented. This base flow depends upon the aquifer recharge, the initial state of water table elevations and the fluctuations in river stage. The methodology consists of deriving analytical solutions to the linearized one-dimensional Boussinesq equation for groundwater flow. The developed methodology was verified using a selected watershed and a good agreement was obtained between observed and computed results. An illustrative numerical example is given.