Abstract

Effects of groundwater use and land-cover change on stream runoff are major concerns of integrated water-resource management in agriculture-dominated watersheds. Stream depletion-rate analyses commonly utilize various analytical approaches, but little progress was made in analytical evaluation of land-use change effects on stream runoff. The purpose of this note is to revise and generalize analytical solutions for stream-aquifer exchange rates and volumes that account for different geometries of the land uses and aquifers. This approach utilizes integration of point-source solutions. Results are illustrated by sensitivity analyses using parameters that are typical of many watersheds. New solutions incorporate and extend previously known results and are sufficient to cover the entire range of practical applications.

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