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U.S. Pacific Coast and Western Region
Internet Map Server sites

PACIFIC COAST

U.S. Pacific West Coast - This Internet Map Server (IMS) site includes an index to 36 GLORIA sidescan sonar mosaics collected and processed by the USGS in 1984. In addition to the broad overview data, multibeam backscatter images for several smaller, coastal mapping surveys for the Gulf of Farallones National Marine Sanctuary, San Francisco Bay, Channel Islands, Los Angeles Margin, San Diego Margin and Puget Sound Region are also available for viewing.
more info | data catalog

U.S. Pacific West Coast usSEABED - This Internet Map Server site includes data released for the U.S. Pacific Coast from the usSEABED project. Data layers include word-based and lab-based analyses of surficial and subbottom sampling. These data have been released via usSEABED: Pacific Coast (California, Oregon, Washington) Offshore Surficial Sediment Data Release (USGS Data Series 182).
more info | data catalog

California Coast Shoreline Change - This Internet Map Server site includes individual data layers compiled in support of the U.S. Geological Survey's National Assessment of Shoreline Change Part 3: Historical Shoreline Change and Associated Coastal Land Loss Along Sandy Shorelines of the California Coast. Data layers include short- and long-term shoreline change evaluations, and historical and modern shorelines released via The National Assessment of Shoreline Change: A GIS Compilation of Vector Shorelines and Associated Shoreline Change Data for the Sandy Shorelines of the California Coast (OFR 2006-1251).
California Coast Shoreline Change Report | data catalog

SOUTHERN CALIFORNIA

Channel Islands National Marine Sanctuary GIS - selected data layers collected as part of a USGS research project conducted in the sanctuary since 1999. Data from sidescan sonar, bathymetry, video and dive observations, and physical samples are consolidated in a geographic information system (GIS) and released in USGS Open-File Report 03-085.
more info | data catalog

CENTRAL CALIFORNIA

Continental Shelf GIS for the Monterey Bay Area - selected data layers for the USGS seafloor for the Monterey Bay National Marine Sanctuary Project from USGS Open-File Report 01-179 and other sources.
more info | data catalog

PACIFIC NORTHWEST

Southwest Washington Coastal Erosion - selected data layers produced during a cooperative interagency program to investigate the natural hazards and coastal changes in the southwest Washington coastal region. Data compiled from USGS Open-File Report 00-167 and Open-File Report 01-076.
more info | data catalog

Lake Mead, Nevada-Arizona

Sediment Studies in Lake Mead - selected data layers collected during detailed geophysical mapping of the floor of Lake Mead from 1999-2001. Major focus of the program was to study the geology of the lake floor, measuring sediment accumulation and the studying the distribution of sediment associated pollutants. Data are released in USGS Open-File Report 03-320. These datasets and derived products are intended to serve as base maps for other geological and geochemical studies of the lake.
more info | data catalog

Bear Lake, Utah-Idaho

Geophysical Surveys of Bear Lake - This Internet Map Server (IMS) site contains various data layers collected during geophysical surveys of the lake during September 2002. Data include a complete sidescan sonar mosaic of the lake, a detailed bathymetric image, bathymetry contours, seismic navigation tracklines with links to reduced seismic images, and the location of grab samples with links to grab sample images.
more info | data catalog

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