http://www.nps.gov/
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Significant changes in nitrogen loads to Jamaica Bay have likely occurred with progressive improvements to Water Pollution Control Plants (WCWPs) that discharge into the Bay. Data available from the New York City Department of Environmental Protection and others will be used to determine loads from WPCPs, combined sewer overflows, and the atmosphere. Selected wells within the USGS water quality database, including those near the landfills that are immediately adjacent to Jamaica Bay, will be used to determine concentrations of nutrients in shallow ground water that enter the bay from ground water seepage. To facilitate evaluation of ground water loads, an existing USGS Finite element model that simulates sub...
Categories: Data,
Project;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Coastal Science,
Coastal Science,
Completed,
Cooperative Water Program,
GW or SW, All tags...
GW or SW,
GW or SW,
Gateway National Recreation Area,
Groundwater-Quality Monitoring,
Groundwater-Quality Monitoring,
Groundwater-Quality Monitoring,
Jamaica Bay NY,
NY,
Nearshore Environmental Health,
Nearshore Environmental Health,
Nearshore Environmental Health,
New York,
USGS New York Water Science Center,
WSC,
Water Quality,
Water Quality,
Water Quality,
Water quality,
groundwater,
wells, Fewer tags
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The U.S. Geological Survey (USGS) collected hydroacoustic data of the St. Croix River adjacent to the Osceola (WI) boat ramp for hydrographic and benthic mapping prior to the reconstruction project implemented by the National Park Service (NPS). Backscatter is the acoustic reflectivity, which is the measure of energy obtained from the echo intensity, and can provide an indication about the nature of the river bottom and its physical character. Image analysis and classification of backscatter, with the combined datasets of bathymetry (and its derivatives) and ground truthing, can predict surficial substrate, or sediment type. For habitat analysis, these datasets were desired by the NPS to help inform and mitigate...
Categories: Data;
Types: Downloadable,
GeoTIFF,
Map Service,
Raster;
Tags: Minnesota,
St. Croix,
Wisconsin,
bathymetry,
biota, All tags...
image mosaics,
multibeam sonar,
sea-floor acoustic reflectivity,
seafloor features,
sidescan sonar, Fewer tags
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An August 2004, north-looking photograph, taken by Ron Karpilo, National Park Service, showing a retreating unnamed valley glacier that forms the East Fork of the Teklanika River, Denali National Park and Preserve, Alaska. The photograph shows the retreating, debris-covered terminus of East Fork Teklanika Glacier with an elevated lateral moraine on its west (left) side. Compare with a 1906 photograph from the same location by S.R. Capps. Note: Link to S.R. Capps photograph number 917 is under Web Links below.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Alaska Glaciers,
Denali National Park and Preserve,
Denali National Park and Preserve,
Glacier Bay National Park and Preserve,
Glaciers, All tags...
National Parks,
Photographers,
photo print, Fewer tags
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Album caption and index card: Scenic view at the Grand Canyon. Grand Canyon National Park. Coconino County, Arizona. ca. 1960. (Photo by M. Woodbridge Williams, National Park Service).
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Coconino County, Arizona,
Grand Canyon National Park Collection,
National Park Service Collection,
National Parks,
Photographers, All tags...
Williams, M.W. Collection,
photo print, Fewer tags
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Album caption and index card: Turks Head, an erosional remnant of the White Rim Sandstone supported by red beds of Organ Rock Tongue, in loop of Green River. View looking north. Canyonlands National Park. San Juan County, Utah. n.d. (Aerial photo by National Park Service) Note: Published as figure 24 in U.S. Geological Survey. Bulletin 1327. 1974. See also: lsw00067_ct
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Canyonlands National Park Collection,
Canyonlands National Park,
Lohman, S.W. Collection,
National Parks,
Photographers, All tags...
color photo print, Fewer tags
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