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The U.S. Geological Survey collected groundwater samples from 48 grid wells and 11 understanding wells screened in aquifers used for domestic supply in San Bernardino County, California, in 2018. The sites were sampled for the Mojave Basin (MOBS) Shallow Aquifer Study Unit of the California State Water Resources Control Board Groundwater Ambient Monitoring and Assessment (GAMA) Program Priority Basin Project’s assessment of the quality of groundwater resources used for domestic and small system drinking water supplies. The MOBS study unit covered the Upper, Middle, and Lower Mojave River groundwater basins, El Mirage groundwater basin, and part of the Harper Valley groundwater basin [California Department of Water...
Tags: California,
Environment,
GAMA,
GAMA,
Groundwater, All tags...
Groundwater Ambient Monitoring and Assessment Program,
Mojave Desert,
Priority Basin Project,
San Bernardino County,
Southern California,
United States,
Water-Quality,
Western United States,
domestic wells,
shallow aquifer, Fewer tags
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These data were collected using field portable (handheld) X-ray fluorescence (pXRF) equipped with a 4-watt Ta/Au X-ray tube. Samples of surficial alluvium, rock, and archived core material from existing auger- or sonic-drilled monitoring wells in Hinkley Valley and the adjoining Water Valley, 140 kilometers (km) northeast of Los Angeles, California, were measured as part of an investigation of naturally-occurring and anthropogenic hexavalent chromium, Cr(VI), concentrations in local groundwater. Surficial alluvium samples were collected from small stream channels draining distinct geologic units, or from previously mapped river deposits, and generally consisted of silt, sand, and granules to small pebbles. Twigs...
Categories: Data;
Tags: Arsenic,
California,
Chromium,
Geochemistry,
Hinkley, All tags...
San Bernardino County,
Uranium,
Western Mojave Desert,
X-ray fluorescence,
environment, Fewer tags
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The U.S. Geological Survey collected groundwater samples from 49 wells used for domestic and small system drinking water supplies and 10 monitoring wells in San Bernardino County, California in 2018. The wells were sampled for the Mojave Basin (MOBS) Shallow Aquifer Study Unit of the California State Water Resources Control Board Groundwater Ambient Monitoring and Assessment (GAMA) Program Priority Basin Project’s assessment of the quality of groundwater resources used for domestic and small system drinking water supplies. Domestic and small-system wells commonly are screened at shallower depths than public-supply wells. The MOBS study unit covered the Upper, Middle, and Lower Mojave River groundwater basins, the...
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: California,
Environment,
GAMA,
Groundwater,
Groundwater Ambient Monitoring and Assessment Program, All tags...
Mojave Desert,
San Bernardino County,
USGS Science Data Catalog (SDC),
Water Quality,
Water-Quality,
Western United States, Fewer tags
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These data on the concentrations of 27 selected elements were collected using a field portable (handheld) X-ray fluorescence (pXRF) instrument (Groover and Izbicki, 2016) equipped with a 4-watt Ta/Au X-ray tube on samples of 1) surficial alluvium, 2) rock, and 3) archived core material and drill cuttings from monitoring wells across an approximately 14,300 square kilometer area in the western part of the Mojave Desert, between 60 to 210 kilometers (km) northeast of Los Angeles, California. These samples were measured using a pXRF as part of a regional-scale investigation of naturally-occurring trace elements (including arsenic, chromium, and uranium) dissolved in groundwater (Groover and Izbicki, 2018), and a local-scale...
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Arsenic,
Barstow,
California (CA),
Chromium,
El Mirage, All tags...
Geochemistry,
Geochemistry,
Hinkley,
Hydrogeology,
Joshua Tree,
Ridgecrest,
San Bernardino County,
Twentynine Palms,
USGS Science Data Catalog (SDC),
Uranium,
Victorville,
Water Quality,
X-ray fluorescence, Fewer tags
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These data were collected using field portable (handheld) X-ray fluorescence (pXRF) equipped with a 4-watt Ta/Au X-ray tube. Samples of surficial alluvium, rock, and archived drill cuttings from monitoring wells in the western part of the Mojave Desert, 60 to 210 kilometers (km) northeast of Los Angeles, California, were measured using as part of an investigation of naturally-occurring trace elements dissolved in groundwater. Surficial alluvium samples were collected from small stream channels draining distinct geologic units, or from previously mapped river deposits, and generally consisted of silt, sand, and granules to small pebbles. Twigs and other detritus were removed prior to measurement. Rocks were collected...
Categories: Data;
Tags: Arsenic,
Barstow,
California,
Chromium,
El Mirage, All tags...
Geochemistry,
Joshua Tree,
Newberry Springs,
Ridgecrest,
San Bernardino County,
Twentynine Palms,
Uranium,
Victorville,
Western Mojave Desert,
X-ray fluorescence,
environment, Fewer tags
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