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Title: HYDRUS-1D Modeling of an Irrigated Agricultural Plot with Application to Aquifer Recharge Estimation

Author
item JIMENEZ-MARTINEZ, J - UNIV OF CATALONIA, SPAIN
item Skaggs, Todd
item VAN GENUCHTEN, MARTINUS
item CANDELA, L - UNIV OF CATALONIA, SPAIN

Submitted to: Meeting Abstract
Publication Type: Proceedings
Publication Acceptance Date: 2/15/2008
Publication Date: 3/28/2008
Citation: Jimenez-Martinez, J., Skaggs, T.H., Van Genuchten, M.T., Candela, L. 2008. Hydrus-1d modeling of an irrigated agricultural plot with application to aquifer recharge estimation. Meeting Abstract. Proceedings of the Second HYDRUS Workshop, March 28, 2008 pp:61-65

Interpretive Summary: Groundwater recharge is the hydrologic process by which water moves from the land surface down to the water table. Accurate knowledge of groundwater recharge rates is important for the sustainable management of water resources. A variety of methods are available for estimating recharge in semi-arid regions, each with advantages and disadvantages. In this work, we estimated recharge for an irrigated basin using a method in which water flow through the root zone is simulated with a computer model. This research will help hydrologists and engineers quantify groundwater recharge and develop science-based guidelines for sustainable water management.

Technical Abstract: A variety of methods are available for estimating aquifer recharge in semi-arid regions, each with advantages and disadvantages. We are investigating a procedure for estimating recharge in an irrigated basin. The method involves computing irrigation return flows based on HYDRUS-1D modeling of root zone and surface boundary water dynamics. In this paper, we demonstrate the modeling approach and the calibration of the model to experimental data.