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Estimating urban-induced artificial recharge; a case study for Austin, TX


Urbanization alters the character and state of the land surface. Urban-induced anthropogenic recharge sources that include leaky utility lines, storm sewer systems, and storm-water catchments, as well as over-irrigation of lawns, parks, and golf courses, can be significant. However, data may be sparse and quantification difficult. A case study for Austin, TX, uses commonly available data to estimate recharge from leaky utility lines and irrigation return flows. The estimates indicate that these sources accounted for at least 5 percent of the total recharge between 1999 and 2009 and that on a monthly basis these contributions can vary from <1 percent to nearly 100 percent of the total recharge. Irrigation return flow was the most significant contributor in summer seasons; however, leakage from utility lines provided more total recharge. Urban recharge contributions were comparable to the mid-size watershed contributions over the 10-year period. These estimates are conservative and should be reevaluated as urbanization continues and as new data become available. Outcomes are relevant for habitat conservation, drought response planning, and urban groundwater management. Urban recharge can be important for buffering seasonal fluctuations during periods of low precipitation and springflow.

ISSN: 1078-7275
EISSN: 1558-9161
Coden: ENGEA9
Serial Title: Environmental & Engineering Geoscience
Serial Volume: 18
Serial Issue: 1
Title: Estimating urban-induced artificial recharge; a case study for Austin, TX
Title: The hydrogeological effects of urbanization
Author(s): Passarello, M. C.Sharp, John M., Jr.Pierce, S. A.
Author(s): Sharp, John M., Jr.prefacer
Author(s): Hibbs, Barry J.prefacer
Affiliation: University of Texas, Austin, Jackson School of Geosciences, Department of Geosciences, Center for International Energy and Environmental Policy, Austin, TX, United States
Affiliation: University of Texas, Jackson School of Geosciences, Department of Geological Sciences, Austin, TX, United States
Pages: 25-36
Published: 201202
Text Language: English
Publisher: Association of Environmental & Engineering Geologists and The Geological Society of America, College Station, TX, United States
Meeting name: Geological Society of America 2010 annual meeting
Meeting location: Denver, CO, USA, United States
Meeting date: 20101101Nov. 1, 2010
References: 54
Accession Number: 2012-035889
Categories: Hydrogeology
Document Type: Serial Conference document
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables, sketch maps
N31°18'00" - N31°18'00", W97°46'60" - W97°46'60"
Secondary Affiliation: California State University, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Association of Engineering Geologists and the Geological Society of America. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201219
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