Evaluation of groundwater sustainability under the influence of irrigated agriculture in San Joaquin Valley, California

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Authors:Owlia, R.; Fogg, G. E.
Author Affiliations:Primary:
University of California at Davis, Davis, CA, United States
Volume Title:AGU 2011 fall meeting
Source:American Geophysical Union Fall Meeting, Vol.2011; American Geophysical Union 2011 fall meeting, San Francisco, CA, Dec. 5-9, 2011. Publisher: American Geophysical Union, Washington, DC, United States
Publication Date:2011
Note:In English
Summary:The sustainability of groundwater in areas with intensive irrigated agriculture is at risk of salinity due to several interrelated factors involving the quality and quantity of irrigation water, amount of precipitation, subsurface heterogeneity, depth to the water table, primary salinity in the soil and groundwater, and the drainage network. Previous work on the groundwater system of the western portion of the San Joaquin Valley, California, indicates that future groundwater quality at upper aquifer may degrade appreciably on time scales of decades to centuries. Large uncertainty exists, however, in the predicted future state of groundwater quality due to the as yet unanalyzed (1) mass transfer of solute between the aquifer channel networks and the abundant, intervening aquitard (silt and clay) materials and (2) interplay between relatively clean recharge from precipitation and from the mountain fronts. By modeling the hydrofacies heterogeneity on a regional scale and performing long-term simulations of basin-scale salinity evolution, we are investigating the long-term sustainability of groundwater quality in an area with intensive irrigated agriculture.
Subjects:Agrochemicals; Clastic sediments; Clay; Drainage; Evaluation; Ground water; Irrigation; Pollution; Risk assessment; Saline composition; Salinity; Sediments; Silt; Soil pollution; Sustainable development; Water quality; Water table; California; San Joaquin Valley; United States
Record ID:2015079453
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States
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