Arid
DOI10.1111/j.1752-1688.2009.00346.x
Clogging of an Effluent Dominated Semiarid River: A Conceptual Model of Stream-Aquifer Interactions(1)
Treese, Samantha; Meixner, Thomas; Hogan, James F.
通讯作者Treese, Samantha
来源期刊JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION
ISSN1093-474X
出版年2009
卷号45期号:4页码:1047-1062
英文摘要

Water managers in arid and semiarid regions increasingly view treated wastewater (effluent) as an important water resource. Artificial recharge basins allow effluent to seep into the ground relieving stressed aquifers, however these basins frequently clog due to physical, chemical, and biological processes. Likewise effluent is increasingly used to maintain perennial base flow for dry streambeds, however, little is known about the impact of effluent on streambed hydraulic conductivity and stream-aquifer interactions. We address this issue by investigating: if a clogging layer forms, how the formation of a clogging layer alters stream-aquifer connections, and what hydrologic factors control the formation and removal of clogging layers. We focused on the Upper Santa Cruz River, Arizona where effluent from the Nogales International Waste Water Treatment Plant sustains perennial flow. Monthly sampling, along a 30 km river reach, was done with two foci: physical streambed transformations and water source identification using chemical composition. Historical dataset were included to provide a larger context for the work. Results show that localized clogging occurs in the Upper Santa Cruz River. The clogging layers perch the stream and shallow streambed causing desaturation below the streambed. With these results, a conceptual model of clogging is established in the context of a semiarid hydrologic cycle: formation during the hot premonsoon months when flow is nearly constant and removal by large flood flows (> 10 m(3)/s) during the monsoon season. However, if the intensity of flooding during the semiarid hydrologic cycle is lessened, the dependent riparian area can experience a die off. This conceptual model leads us to the conclusion that effluent dominated riparian systems are inherently unstable due to the clogging process. Further understanding of this process could lead to improved ecosystem restoration and management.


英文关键词effluent stream-ground-water interaction semiarid clogging
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000268531900018
WOS关键词ARTIFICIAL RECHARGE ; GROUNDWATER ; SEEPAGE ; FLOW ; IMPACT
WOS类目Engineering, Environmental ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向Engineering ; Geology ; Water Resources
来源机构University of Arizona
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/161781
作者单位Univ Arizona, Dept Hydrol & Water Resources, SAHRA, Tucson, AZ 85721 USA
推荐引用方式
GB/T 7714
Treese, Samantha,Meixner, Thomas,Hogan, James F.. Clogging of an Effluent Dominated Semiarid River: A Conceptual Model of Stream-Aquifer Interactions(1)[J]. University of Arizona,2009,45(4):1047-1062.
APA Treese, Samantha,Meixner, Thomas,&Hogan, James F..(2009).Clogging of an Effluent Dominated Semiarid River: A Conceptual Model of Stream-Aquifer Interactions(1).JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION,45(4),1047-1062.
MLA Treese, Samantha,et al."Clogging of an Effluent Dominated Semiarid River: A Conceptual Model of Stream-Aquifer Interactions(1)".JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION 45.4(2009):1047-1062.
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