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研究报告 [6]
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Land-cover changes associated with oil and natural-gas production and concentrations of selected constituents in surface-water and streambed-sediment samples collected upstream from and within an area of oil and natural-gas production, south Texas, 2008–17 [研究报告]
10.3133/sir20185119U.S. Geological Survey. 2018-01-01
Crow, Cassi L. ccrow@usgs.gov;  Opsahl, Stephen P. sopsahl@usgs.gov;  Pedraza, Diana E.;  Pease, Emily C.;  Kushnereit, Ross K. rkushnereit@usgs.gov
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Water-quality observations of the San Antonio segment of the Edwards aquifer, Texas, with an emphasis on processes influencing nutrient and pesticide geochemistry and factors affecting aquifer vulnerability, 2010–16 [研究报告]
10.3133/sir20185060U.S. Geological Survey. 2018-01-01
Opsahl, Stephen P. sopsahl@usgs.gov;  Musgrove, MaryLynn mmusgrov@usgs.gov;  Mahler, Barbara J. bjmahler@usgs.gov;  Lambert, Rebecca B. blambert@usgs.gov
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Water quality, sources of nitrate, and chemical loadings in the Geronimo Creek and Plum Creek watersheds, south-central Texas, April 2015–March 2016 [研究报告]
10.3133/sir20175121U.S. Geological Survey. 2017-01-01
Lambert, Rebecca B. blambert@usgs.gov;  Opsahl, Stephen P. sopsahl@usgs.gov;  Musgrove, MaryLynn mmusgrov@usgs.gov
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Compounds of emerging concern in the San Antonio River Basin, Texas, 2011–12 [研究报告]
10.3133/fs20163071U.S. Geological Survey. 2016-01-01
Lambert, Rebecca B. blambert@usgs.gov;  Opsahl, Stephen P. sopsahl@usgs.gov
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Sediment characteristics in the San Antonio River Basin downstream from San Antonio, Texas, and at a site on the Guadalupe River downstream from the San Antonio River Basin, 1966-2013 [研究报告]
10.3133/sir20145048U.S. Geological Survey. 2014-01-01
Crow, Cassi L. ccrow@usgs.gov;  Banta, J. Ryan;  Opsahl, Stephen P. sopsahl@usgs.gov
View  |  Adobe PDF(1586Kb)  |  View/Download：13/2
 
Detections, concentrations, and distributional patterns of compounds of emerging concern in the San Antonio River Basin, Texas, 2011-12 [研究报告]
10.3133/sir20135200U.S. Geological Survey. 2013-01-01
Opsahl, Stephen P. sopsahl@usgs.gov;  Lambert, Rebecca B. blambert@usgs.gov
Adobe PDF(3289Kb)  |  View/Download：22/2
 

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