Arid
DOI10.1016/j.jenvman.2017.05.058
Coupling distributed stormwater collection and managed aquifer recharge: Field application and implications
Beganskas, S.; Fisher, A. T.
通讯作者Beganskas, S.
来源期刊JOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN0301-4797
EISSN1095-8630
出版年2017
卷号200页码:366-379
英文摘要

Groundwater is increasingly important for satisfying California’s growing fresh water demand. Strategies like managed aquifer recharge (MAR) can improve groundwater supplies, mitigating the negative consequences of persistent groundwater overdraft. Distributed stormwater collection (DSC)-MAR projects collect and infiltrate excess hillslope runoff before it reaches a stream, focusing on 40-400 ha drainage areas (100-1000 ac). We present results from six years of DSC-MAR operation including high resolution analyses of precipitation, runoff generation, infiltration, and sediment transport and discuss their implications for regional resource management. This project generated significant water supply benefit over six years, including an extended regional drought, collecting and infiltrating 5.3 x 10(5) m(3) (426 ac-ft). Runoff generation was highly sensitive to sub-daily storm frequency, duration, and intensity, and a single intense storm often accounted for a large fraction of annual runoff. Observed infiltration rates varied widely in space and time. The basin-average infiltration rate during storms was 1-3 m/d, with point-specific rates up to 8 m/d. Despite efforts to limit sediment load, 8.2 x 10(5) kg of fine-grained sediment accumulated in the infiltration basin over three years, likely reducing soil infiltration capacity. Periodic removal of accumulated material, better source control, and/or improved sediment detention could mitigate this effect in the future. Regional soil analyses can maximize DSC-MAR benefits by identifying high infiltration capacity features and characterizing upland sediment sources. A regional network of DSC-MAR projects could increase groundwater supplies while contributing to improved groundwater quality, flood mitigation, and stakeholder engagement. (C) 2017 Elsevier Ltd. All rights reserved.


英文关键词Managed aquifer recharge Distributed stormwater collection Groundwater management Precipitation intensity Infiltration capacity Sediment accumulation
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000406564400036
WOS关键词ARTIFICIAL RECHARGE ; GROUNDWATER RECHARGE ; URBAN STORMWATER ; HYDRAULIC CONDUCTIVITY ; CALIFORNIA DROUGHT ; SOUTHERN CALIFORNIA ; FUTURE CHALLENGES ; UNSATURATED ZONE ; RISK-ASSESSMENT ; MOJAVE DESERT
WOS类目Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/200362
作者单位Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA
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GB/T 7714
Beganskas, S.,Fisher, A. T.. Coupling distributed stormwater collection and managed aquifer recharge: Field application and implications[J],2017,200:366-379.
APA Beganskas, S.,&Fisher, A. T..(2017).Coupling distributed stormwater collection and managed aquifer recharge: Field application and implications.JOURNAL OF ENVIRONMENTAL MANAGEMENT,200,366-379.
MLA Beganskas, S.,et al."Coupling distributed stormwater collection and managed aquifer recharge: Field application and implications".JOURNAL OF ENVIRONMENTAL MANAGEMENT 200(2017):366-379.
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