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Integrated simulation of consumptive use and land subsidence in the Central Valley, California, for the past and for a future subject to urbanization and climate change

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Abstract

Competition for water resources is growing throughout California, particularly in the Central Valley where about 20% of all groundwater used in the United States is consumed for agriculture and urban water supply. Continued agricultural use coupled with urban growth and potential climate change would result in continued depletion of groundwater storage and associated land subsidence throughout the Central Valley. For 1962-2003, an estimated 1,230 hectare meters (hm3) of water was withdrawn from fine-grained beds, resulting in more than three meters (m) of additional land subsidence locally. Linked physically-based, supply-constrained and emanddriven hydrologic models were used to simulate future hydrologic conditions under the A2 climate projection scenario that assumes continued "business as usual" greenhouse gas emissions. Results indicate an increased subsidence in the second half of the twenty-first century. Potential simulated land subsidence extends into urban areas and the eastern side of the valley where future surface-water deliveries may be depleted. 

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Additional publication details

Publication type Conference Paper
Publication Subtype Conference Paper
Title Integrated simulation of consumptive use and land subsidence in the Central Valley, California, for the past and for a future subject to urbanization and climate change
Subseries Land subsidence, associated hazards and the role of natural resources development: EISOLS 2010 Proceedings
ISBN 1907161120 9781907161124
Volume 339
Year Published 2010
Language English
Publisher International Association of Hydrological Sciences
Description 5 p.
Larger Work Title Land subsidence, associated hazards and the role of natural resources development: EISOLS 2010 Proceedings
First page 467
Last page 471
Conference Title Eighth International Symposium on Land Subsidence (EISOLS) 2010
Conference Location Querétaro, Mexico
Conference Date October 17-22 2010
Country United States
State California
Other Geospatial Central Valley
Online Only (Y/N) N
Additional Online Files (Y/N) N