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Williston Basin Assessment Web Map (2014)

Williston Basin Assessment Web Map

Dates

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2014-12-15

Summary

Contamination to aquatic resources from co-produced water (brine) associated with energy development has been documented in the northeastern portion of the Williston Basin; an area mantled by glacial drift. The presence and magnitude of brine contamination can be determined using the contamination index (CI) value from water samples. Recently, the U.S. Geological Survey published a section (~2.59 km2) level risk assessment of brine contamination to aquatic resources for Sheridan County, Montana, using oilfield and hydrogeological parameters. Our goal was to improve the Sheridan County assessment (SCA) and evaluate the use of this new Williston Basin assessment (WBA) across 31 counties mantled by glacial drift in the Williston Basin. [...]

Contacts

Point of Contact :
U.S. Geological Survey, Northwest Region
Distributor :
U.S. Geological Survey, Northwest Region
Metadata Contact :
Tara Chesley-Preston
Originator :
Todd M. Preston, Tara L. Chesley-Preston

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Williston Basin Assessment Web Map (2014) Metadata.html 30.8 KB text/html; charset=UTF-8
Williston Basin Assessment Web Map (2014) Metadata.txt 17.11 KB text/plain; charset=UTF-8
Williston Basin Assessment Web Map (2014) Metadata.xml
Original FGDC Metadata
View 		18.31 KB application/fgdc+xml
Extension: Williston Basin Assessment Web Map (2014).zip
thumbnail.png thumbnail 442 Bytes
Williston Basin Assessment Web Map (2014).sd 449.12 MB

Purpose

This risk assessment was conducted to identify areas with a greater risk of potential contamination from historical and current oil and gas development in the portion of the Williston Basin overlain by glacial deposits, including the Prairie Pothole Region. Appropriate uses of these data include assessing regional trends in potential contamination from oil and gas development. This study does not include spill data, pipeline breaks or known sources of contamination. Rather, it summarizes the density of oil wells, the age of oil wells (as a surrogate for changes in oil field practices due to the recognition of the environmental effects associated with reserve pits), the percentage of wetlands, stream reach, and the percentage of area containing soils with high hydraulic conductivity within each section in the study area. These results can be used to help land managers identify areas to consolidate limited resources.
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