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In a study conducted by the U.S. Geological Survey (USGS) and the New Hampshire Department of Environmental Services, detectable concentrations of per- and polyfluoroalkyl substances (PFAS) were found in the soil at every site despite targeting locations with no known PFAS sources (Santangelo and others, 2022). The widespread distribution of PFAS concentrations in New Hampshire has since sparked critical interest into understanding whether recharge to groundwater contains significant concentrations of PFAS after infiltration through soils. To address this concern, the USGS implemented a pilot study designed to evaluate whether PFAS infiltrate through shallow soil into shallow groundwater. Five sites were selected...
Categories: Data;
Tags: Eastern United States,
Environmental Health,
Hydrology,
New Hampshire,
Northeast,
The data herein are geochemical (from X-Ray fluorescence spectrometry), grain size (percent clay, silt, sand), lithological (loss on ignition data), bathymetric, reconstructed IVT, and radioactive isotopes (14-C, 210-Pb, 226-Ra, and 137-Cs). These data were collected from sediments from Leonard Lake, Mendocino County, California, USA starting in 2014. Together, these data provide evidence for a record of extreme precipitation going back three millennia, showing regional pluvial and drought cycles.
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: California,
Climatology,
Geography,
Hydrology,
Limnology,
Album caption: Section of spruce tree showing wave damage, Lituya Bay. Mt. Fairweather quadrangle, Lituya district, Alaska Gulf region, Alaska. 1954. Index card: Section cut in 1953 from spruce tree growing just above trimline of 1853-54 giant wave. There are 100 growth rings outside injury on right. Mount Fairweather quadrangle, Lituya district, Alaska Gulf region, Alaska. Published as Plate 10 in U.S. Geological Survey. Professional paper 354-C. 1960.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Lituya district, Alaska Gulf Region, Alaska,
Miller, D.J. Collection,
Photographers,
photo print
Album Caption: View in old Spanish coquina quarries, much overgrown. Closer view. Anastasia Island, Florida.
Typical outcrops of Piedra rhyolite in West Bellows Creek, as seen from north of benchmark 11,570; the main tuff layer of the Piedra forms the bench above cliff. Creed quadrangle. Mineral County, Colorado. September 1, 1914. Published as Figure 24, in U.S.Geological Survey Professional paper 258. 1956.
Categories: Image;
Tags: Hunter, J.F. Collection,
Mineral County, Colorado,
Photographers,
photo print
Yosemite National Park. Scene in Mariposa Grove of big trees. October 4, 1916. F-stop 11, 1/10 seconds.
Categories: Image;
Tags: Hunter, J.F. Collection,
National Parks,
Photographers,
Yosemite National Park,
Yosemite National Park Collection,
Irregular flows of latite and rhyolite. From ridge west of mouth of Mill Gulch, looking northwest over a side.
Categories: Image;
Tags: Hunter, J.F. Collection,
Photographers,
Saguache County, Colorado,
photo print
Davis Mountain (?). Jeff Davis County, Texas. 1899.
Categories: Image;
Tags: Hill, R.T. Collection,
Jeff Davis County, Texas,
Photographers,
photo print
This U.S. Geological Survey (USGS) data release contains meteorological, water temperature, light (photosynthetically active radiation and illumination), and multichannel fluorescence sensor data from the Finger Lakes Region of New York, during the fall of 2018 and the summer and fall of 2019 and 2020. It also includes all sensor data and associated discrete sample data, at the near surface (top), mid-depth (middle) and near bottom (bottom) depths. Data were collected from three Advanced Monitoring Pilot study platforms in open water at Seneca Lake (USGS station number 425027076564401), Owasco Lake (USGS station number 425327076313601), and Skaneateles Lake (USGS station number 425606076251601) in 2018 and 2019,...
A three-dimensional groundwater flow model was developed in 1997 to evaluate the groundwater flow system at Puget Sound Naval Shipyard, Naval Base Kitsap, Bremerton, Washington (https://pubs.er.usgs.gov/publication/wri964147). In 2016, a regional groundwater flow model for the greater Kitsap Peninsula was developed (https://pubs.er.usgs.gov/publication/sir20165052). Using information from the 2016 regional model, the 1997 groundwater flow model for the Puget Sound Naval Shipyard was updated with a new interpretation of the underlying hydrogeologic units, a refined model grid, and improved recharge estimates. A steady-state model version was constructed in MODFLOW-NWT to simulate equilibrium conditions. MODPATH forward...
A three-dimensional groundwater flow model using MODFLOW-NWT was developed to evaluate historical and potential stream capture in the lower Humboldt River Basin, Nevada. The Humboldt River Basin is the only river basin that is contained entirely within the state of Nevada. The effect of groundwater pumping on the Humboldt River is not well understood. Tools are needed to determine stream capture and manage groundwater pumping in the Humboldt River Basin. Previous work has demonstrated that the river’s surface-water resource is sensitive to groundwater withdrawals, which have steadily increased since the 1950s for agriculture, municipal, and mining uses. A numerical groundwater flow model was developed for the purpose...
Categories: Data Release - Revised;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Capture,
Groundwater Model,
Humboldt River Basin watershed,
Hydrology,
InlandWaters,
Per- and polyfluoroalkyl substances (PFAS) and related chemical and physical data are presented from 100 shallow soil sampling locations within the State of New Hampshire. Sites were randomly determined through an equal-area grid approach (Scott, 1990) targeting undisturbed areas, which included lands classified by the 2016 National Land Cover Database (Dewitz, 2019) as forested, shrubland, scrubland, grassland, herbaceous, wetlands, or barren land. Sampling sites were located at the closest point to the random location identified, where access and permission were available. To limit the potential for sampling results to be influenced by local releases of PFAS, a 500-meter buffer around parcels associated with known...
Categories: Data;
Tags: Environmental Health,
New Hampshire,
PFAS,
Soil Sciences,
USGS Science Data Catalog (SDC),
Album caption: (Also, see #723) Panoramic view of front of Hugh Miller Glacier. July 28, 1919. No index card available.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Alaska,
Glaciers,
Hugh Miller Glacier,
Mertie, J.B. Collection,
Photographers,
The U.S. Geological Survey (USGS) has compiled a geodatabase containing mineral-related geospatial data for 19 countries of interest in the Indo-Pacific region (area of study): Bangladesh, Bhutan, Brunei, Burma, Fiji, Malaysia, Mongolia, Nauru, New Caledonia, New Zealand, Papua New Guinea, Philippines, Singapore, Solomon Islands, South Korea (Republic of Korea), Sri Lanka, Taiwan, Timor-Leste, and Vietnam. The data can be used in analyses of the extractive fuel and nonfuel mineral industries integral for the successful operation of the mineral industries within the area of study. This geodatabase reflects the USGS ongoing commitment to its mission of understanding the nature and distribution of global mineral commodity...
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Asia,
Bangladesh,
Bhutan,
Brunei,
Burma,
A sensitivity analysis of groundwater-recharge estimates from a water-budget model was completed for the islands of Oahu and Maui, Hawaii (Johnson and others, 2023). Results of the sensitivity analysis were used to quantify the relative importance of selected model parameters to recharge estimates for three moisture zones (dry, mesic, and wet) on Oahu and Maui. These shapefiles contain the boundaries of the moisture zones and boundaries of the model subareas that were used in the model simulations for Oahu and Maui. Attributes in the shapefiles include the names of the land-cover types assigned to model subareas and the mean annual recharge values determined for the model subareas for the baseline scenario of the...
Album caption: Aerial view of Lituya Bay from point off entrance; showing 1958 wave damage. Mt. Fairweather quadrangle, Lituya district, Alaska Gulf region, Alaska. August 29, 1958. Index card: View of Lituya Bay. A giant wave generated on July 9, 1958, by a rockslide from the cliff at the head of the bay destroyed the forest over the light areas to a maximum altitude of 1,720 feet and to a maximum distance of 3,600 feet in from high-tide shore line at Fish Lake. A fishing boat anchored in the cove was carried over the spit in the foreground; a boat underway near the entrance was sunk and a third boat, anchored, rode out the wave. Mount Fairweather quadrangle, Lituya district, Alaska Gulf region, Alaska. Published...
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Lituya district, Alaska Gulf Region, Alaska,
Miller, D.J. Collection,
Photographers,
aerial,
photo print
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