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The U.S. Geological Survey collected groundwater samples from 67 domestic wells and 1 spring used for domestic supply in Placer, El Dorado, Amador, and Calaveras Counties, California in 2016-2017....
Search relevance: 1.00 | Views last month: 11 | Catalog Last Checked: September 10, 2026 at 10:02 PM -
Water, bed sediment, and biota were sampled in selected streams from Butte to near Missoula, Montana, as part of a monitoring program in the upper Clark Fork Basin of western Montana. The sampling...
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This high-level metadata data document will be supplemented with detailed regional metadata at a later date. The NHDPlusV2 is an integrated suite of application-ready geospatial data sets that...
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This geodatabase contains lake feature datasets used for the Nitrogen Screening project. Individual metedata is available. The NHDPlus Version 1.0 is an integrated suite of application-ready...
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Background A typical purification system that provides purified water which meets ionic and organic chemical standards, must be protected from microbial proliferation to minimize...
Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: September 10, 2026 at 07:36 PM -
Water, bed sediment, and invertebrate tissue were sampled in streams from Butte to near Missoula, Montana, as part of a monitoring program in the Clark Fork Basin. The sampling program was...
Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: September 10, 2026 at 10:06 PM -
The U.S. Geological Survey collected groundwater samples from 67 wells and 1 spring used for domestic and small system drinking water supplies in Placer, El Dorado, Amador, and Calaveras Counties,...
Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: September 10, 2026 at 08:36 PM -
The National Water Quality Network (NWQN) for Rivers and Streams includes 113 surface-water river and stream sites monitored by the U.S. Geological Survey (USGS) National Water Quality Program...
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The California Groundwater Ambient Monitoring and Assessment Program (GAMA) is a statewide assessment of groundwater quality designed to help better understand and identify risks to groundwater...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 10:20 PM -
Water, bed sediment, and biota were sampled in selected streams from Butte to near Missoula, Montana, as part of a monitoring program in the upper Clark Fork Basin of western Montana. The sampling...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 08:12 PM -
This U.S. Geological Survey Data Release contains the associated data described in the Scientific Investigations Report, "Trends in water quality of selected streams and reservoirs used for water...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 10:49 PM -
The California Groundwater Ambient Monitoring and Assessment Program (GAMA) is a statewide assessment of groundwater quality designed to help better understand and identify risks to groundwater...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 09:09 PM -
This U.S. Geological Survey (USGS) Data Release provides selected discretely measured water-quality data collected from 27 monitoring sites in Johnson County, Kansas, during January 2015 through...
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The Triangle Chemical Company Superfund site, in Orange County, Texas, was a chemical mixing and blending facility in the 1970s. According to the Environmental Protection Agency (EPA), poor waste...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 08:30 PM -
This U.S. Geological Survey Data Release contains the associated data described in the Scientific Investigations Report, "Trends in water quality of selected streams and reservoirs used for water...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 08:59 PM -
The extensive development of oil and natural-gas resources in south Texas during the past 10 years has led to questions regarding possible environmental effects of processes associated with oil...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 08:27 PM -
The U.S. Geological Survey collected groundwater samples from 49 wells used for domestic and small system drinking water supplies in Amador, Placer, Sutter, and Sacramento Counties, California in...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 09:59 PM -
In 2013, the first of several Regional Stream Quality Assessments (RSQA) was done in the Midwest United States. The Midwest Stream Quality Assessment (MSQA) was a collaborative study by the U.S....
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 10:38 PM -
The California Groundwater Ambient Monitoring and Assessment Program (GAMA) is a statewide assessment of groundwater quality designed to help better understand and identify risks to groundwater...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 10:33 PM -
The U.S. Geological Survey (USGS) collected continuous select fluorescence, transmission, and water temperature data at Illinois River at Starved Rock, Illinois, near Utica, Illinois (USGS...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 09:09 PM
