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Displaying 1-3 of 3 results for author "Opsahl, Stephen P."
Detections, concentrations, and distributional patterns of compounds of emerging concern in the San Antonio River basin, Texas, 2011-2012 / by Stephen P. Opsahl and Rebecca B. Lambert.
- Text
- Reston, Virginia : U.S. Geological Survey, 2013.
- 2013
- 1 Resource
Available Online
https://purl.fdlp.gov/GPO/gpo53512Temporal and spatial variability of water quality in the San Antonio segment of the Edwards aquifer recharge zone, Texas, with an emphasis on periods of groundwater recharge, September 2017-July 2019 / by Stephen P. Opsahl, MaryLynn Musgrove, and Keith E. Mecum.
- Text
- Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2020.
- 2020
- 1 Resource
Available Online
https://purl.fdlp.gov/GPO/gpo151671Quality of surface-water runoff in selected streams in the San Antonio segment of the Edwards aquifer recharge zone, Bexar County, Texas, 1997-2012 / by Stephen P. Opsahl ; prepared in cooperation with the San Antonio Water System.
- Text
- Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2012.
- 2012
- 1 Resource
Available Online
https://purl.fdlp.gov/GPO/gpo35453
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