Research Hydrologist
Colorado Water Science Center
Email:
pmcmahon@usgs.gov
Office Phone:
303-236-6899
Fax:
303-236-4912
ORCID:
0000-0001-7452-2379
Location
DFC Bldg 53
Box 25046
Denver Federal Center
Denver
, CO
80225-0046
US
Supervisor:
Cory A Williams
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Concentrations of inorganic constituents, dissolved organic carbon (DOC), tritium, per- and polyfluoroalkyl substances (PFAS), volatile organic compounds (VOCs), and pharmaceuticals were measured in groundwater samples collected from 254 wells in 2019 and 2020. Concentrations of inorganic constituents, DOC, VOCs, and pharmaceuticals were measured at the U.S. Geological Survey (USGS) National Water Quality Laboratory in Lakewood, Colorado. Concentrations of tritium were measured at the USGS Tritium Laboratory in Menlo Park, California. Concentrations of PFAS were measured at SGS Laboratory in Orlando, Florida. In addition, several geospatial parameters were determined, including: percentages of selected land uses...
Categories: Data;
Tags: Alabama,
Florida,
Georgia,
Hydrology,
Illinois, All tags...
Indiana,
Kentucky,
Maine,
Massachusetts,
Mississippi,
NAWQA,
New Hampshire,
Ohio,
PFAS,
Pennsylvania,
Rhode Island,
South Carolina,
Tennessee,
USGS Science Data Catalog (SDC),
Water Quality,
West Virginia,
cycle 3,
groundwater, Fewer tags
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The California State Water Resources Control Board (State Water Board) initiated the Oil and Gas Regional Monitoring Program (RMP) to assess effects of oil and gas development on groundwater designated for any beneficial use. The U.S. Geological Survey (USGS) is the technical lead in conducting the RMP through the California Oil, Gas, and Groundwater (COGG) Program, working in cooperation with the State Water Board, and in partnership with other State and local agencies. The USGS collected and analyzed groundwater, surface water, and associated quality control (QC) samples in the Poso Creek Oil Field study area during February 2020-December 2021. Groundwater samples were collected from eleven irrigation, two domestic,...
Categories: Data;
Tags: Aquifers,
California,
Geochemistry,
Geochemistry,
Groundwater, All tags...
Groundwater Aquifer,
Groundwater Quality,
Kern County,
Poso Creek Oil Field,
Regional Monitoring Program,
Salinity,
Salinity Mapping,
USGS Science Data Catalog (SDC),
Water Chemistry,
Water Quality,
Water Quality Data,
Water Resources,
inlandWaters, Fewer tags
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This data release contains oil well annular cement and casing damage data from parts of the South Belridge and Lost Hills Oil Fields in western Kern County, California. The study area coincides with where groundwater with less than 10,000 milligrams per liter total dissolved solids and outside an exempt aquifer are located overlying oil-producing zones in these fields. In the study areas, hydraulic fracturing is occurring in mature oil fields where oil and gas development has occurred for approximately a century. The data were compiled from records of the California Department of Conservation, Geologic Energy Management Division (CalGEM). The data compiled include construction information for oil wells, drilling...
Categories: Data;
Tags: California,
Energy Resources,
Geochemistry,
Lost Hills oil field,
San Joaquin Valley, All tags...
South Belridge oil field,
USGS Science Data Catalog (SDC),
Water Quality,
Water Resources,
fluid migration,
geoscientificInformation,
groundwater,
groundwater quality,
hydraulic fracturing,
inlandWaters,
oil and gas,
oil fields,
well damage, Fewer tags
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The U.S. Geological Survey (USGS) in cooperation with the California State Water Resources Control Board collected produced water and gas samples in the Midway-Sunset, Poso Creek, and Buena Vista Oil Fields in Kern County in 2020 and 2021. Sampled sites included oil wells; injectate from tanks, pipelines, and injection wells where produced water from many wells, after removal of oil, is stored or transported prior to underground injection; and integrated produced water from many oil wells collected from pipelines before oil removal. This digital dataset contains the site information, analyzing laboratories and methods, and water and gas chemistry and quality-control results for these samples. Chemistry results include...
Categories: Data;
Tags: Buena Vista,
California,
Hydrology,
Kern County,
Midway-Sunset, All tags...
Poso Creek,
San Joaquin Valley,
USGS Science Data Catalog (SDC),
Water Quality,
Water Resources,
boundaries,
environment,
geoscientificInformation,
groundwater,
groundwater quality,
inlandWaters,
water chemistry,
water quality,
water sampling, Fewer tags
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Natural resource planning at all scales demands methods for assessing the impacts of resource development and use, and in particular it requires standardized methods that yield robust and unbiased results. Building from existing probabilistic methods for assessing the volumes of energy and mineral resources, we provide an algorithm for consistent, reproducible, quantitative assessment of resource development impacts. The approach combines probabilistic input data with Monte Carlo statistical methods to determine probabilistic outputs that convey the uncertainties inherent in the data. For example, one can utilize our algorithm to combine data from a natural gas resource assessment with maps of sage grouse leks and...
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