气候变化领域集成服务门户(CCPortal): Domestic well vulnerability to drought duration and unsustainable groundwater management in California's Central Valley

CCPortal

DOI	10.1088/1748-9326/ab6f10
	Domestic well vulnerability to drought duration and unsustainable groundwater management in California's Central Valley
	Pauloo R.A.; Escriva-Bou A.; Dahlke H.; Fencl A.; Guillon H.; Fogg G.E.
发表日期	2020
ISSN	17489318
卷号	15 期号:4
英文摘要	Millions of Californians access drinking water via domestic wells, which are vulnerable to drought and unsustainable groundwater management. Groundwater overdraft and the possibility of longer drought duration under climate change threatens domestic well reliability, yet we lack tools to assess the impact of such events. Here, we leverage 943 469 well completion reports and 20 years of groundwater elevation data to develop a spatially-explicit domestic well failure model covering California's Central Valley. Our model successfully reproduces the spatial distribution of observed domestic well failures during the severe 2012-2016 drought (n = 2027). Next, the impact of longer drought duration (5-8 years) on domestic well failure is evaluated, indicating that if the 2012-2016 drought would have continued into a 6 to 8 year long drought, a total of 4037-5460 to 6538-8056 wells would fail. The same drought duration scenarios with an intervening wet winter in 2017 lead to an average of 498 and 738 fewer well failures. Additionally, we map vulnerable wells at high failure risk and find that they align with clusters of predicted well failures. Lastly, we evaluate how the timing and implementation of different projected groundwater management regimes impact groundwater levels and thus domestic well failure. When historic overdraft persists until 2040, domestic well failures range from 5966 to 10 466 (depending on the historic period considered). When sustainability is achieved progressively between 2020 and 2040, well failures range from 3677 to 6943, and from 1516 to 2513 when groundwater is not allowed to decline after 2020. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	Domestic well; Drought; Dry well; Groundwater; Water management; Well failure
语种	英语
scopus关键词	Climate change; Groundwater; Potable water; Water management; Well completion; Domestic wells; Drought duration; Failure risk; Groundwater elevations; Groundwater management; Groundwater overdraft; Long droughts; Spatially explicit; Drought; climate change; drinking water; drought; groundwater; seasonal variation; spatial distribution; sustainability; vulnerability; water management; California; Central Valley [California]; United States
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154085
作者单位	University of California, Davis, Hydrologic Sciences, One Shields Avenue, Davis, CA 95616, United States; Water Policy Center, Public Policy Institute of California, 500 Washington St, Suite 600, San Francisco, CA 94111, United States; University of California, Davis, Department of Environmental Science and Policy, One Shields Avenue, Davis, CA 95616, United States
推荐引用方式 GB/T 7714	Pauloo R.A.,Escriva-Bou A.,Dahlke H.,et al. Domestic well vulnerability to drought duration and unsustainable groundwater management in California's Central Valley[J],2020,15(4).
APA	Pauloo R.A.,Escriva-Bou A.,Dahlke H.,Fencl A.,Guillon H.,&Fogg G.E..(2020).Domestic well vulnerability to drought duration and unsustainable groundwater management in California's Central Valley.Environmental Research Letters,15(4).
MLA	Pauloo R.A.,et al."Domestic well vulnerability to drought duration and unsustainable groundwater management in California's Central Valley".Environmental Research Letters 15.4(2020).