Estimating Regional Groundwater Recharge Using a Hydrological Budget Method

Autor: Moshrik R. Hamdi, Behrooz Mortazavi, Fakhri Manghi, Christie Crother
Rok vydání: 2009
Předmět:
Zdroj: Water Resources Management. 23:2475-2489
ISSN: 1573-1650
0920-4741
DOI: 10.1007/s11269-008-9391-0
Popis: Estimating groundwater recharge is a key component in determining the sustainable yield of groundwater resources in arid and semi-arid areas such as southern California. Estimating groundwater recharge on a regional scale requires developing a water budget that incorporates data on boundary conditions, aquifer properties, groundwater levels, and groundwater production. The hydrological budget method proposed herein is simple, cost-effective, and easy to apply. It utilizes matched pairs of groundwater level measurements, groundwater extraction data, and distributed specific yield information for estimating groundwater recharge. In this method, ARCGIS 9.0 Geostatistical and Spatial Analyst applications are used for interpolating/extrapolating and creating grids for specific yield, bedrock elevation, and raw groundwater data. The annual average groundwater recharge for the Hemet subbasin in western Riverside County, California, from 1997 to 2005 is estimated at 12.5 MCM, with wet and dry periods ranging between 14.9 MCM and 11.7 MCM, respectively. The proposed method utilizes information commonly available to most groundwater management entities, such as groundwater production data, groundwater level measurements, and lithologic information.
Databáze: OpenAIRE
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