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This data release contains coastal wetland synthesis products for the geographic region from Jamaica Bay to western Great South Bay, located in southeastern New York State. Metrics for resiliency, including unvegetated to vegetated ratio (UVVR), marsh elevation, and mean tidal range, are calculated for smaller units delineated from a Digital Elevation Model, providing the spatial variability of physical factors that influence wetland health. Through scientific efforts initiated with the Hurricane Sandy Science Plan, the U.S. Geological Survey has been expanding national assessment of coastal change hazards and forecast products to coastal wetlands with the intent of providing Federal, State, and local managers with...
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The U.S. Geological Survey (USGS) in cooperation with the Harris‐Galveston Subsidence District, City of Houston, Fort Bend Subsidence District, and Lone Star Groundwater Conservation District has produced this dataset of groundwater‐level altitudes and groundwater‐level altitude changes in the Chicot, Evangeline, and Jasper aquifers in the Houston‐Galveston region, Texas. This dataset shows current‐year (2018) groundwater‐level altitudes for each aquifer, 5‐year (2013‐18) groundwater‐level changes for each aquifer, long‐term (1990‐2018 and 1977‐2018) groundwater‐level changes for the Chicot and Evangeline aquifers, and long‐term (2000‐2018) groundwater‐level change for the Jasper aquifer. The groundwater‐level measurements...
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The U.S. Geological Survey (USGS) worked in cooperation with the Federal Emergency Management Agency (FEMA) to document the August and September, 2017 Hurricane Harvey storm event in southeastern Texas and southwestern Louisiana. Hurricane Harvey was the most significant rainfall event in United States history in scope and rainfall totals since rainfall records began during the 1880s. From August 25 through September 1, 2017, some areas in southeastern Texas received more than 60 inches of rain; large areas received more than 40 inches of rain. This data release contains the flood inundation polygons, flood-depth rasters, mapped boundaries, and high-water mark (HWM) locations for the selected river basins, coastal...
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Inland fishes provide important ecosystem services to communities worldwide and are especially vulnerable to the impacts of climate change. Fishes respond to climate change in diverse and nuanced ways which creates challenges for practioners of fisheries conservation and management. Although climate change is a known factor affecting fish globally, a comprehensive online, public database of how climate change has impacted inland fishes worldwide and management practices to address these impacts does not exist. We conducted an extensive, systematic primary literature review to identify peer-reviewed journal publications with projected and documented examples of climate change impacts on inland fishes. From this standardized...
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Death Valley National Park, California. An unusually luxuriant and tall growth of willows lines the banks of Grapevine Creek at Scotty's Castle (background) surrounded by nearly barren hills. Figure 26 (upper photo), U.S. Geological Survey Water-Supply Paper 1423.
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This data release includes raw and processed (inverted) data for three different geophysical methods, continuous resistivity profiles (CRP), direct current electrical resistivity tomography (ERT), and frequency domain electromagnetic induction (FDEM) data. These surface geophysical methods were used as a proxy for groundwater salinity in the Paradox Valley in western Colorado to investigate temporal and spatial variations in the position of brine-rich groundwater under the Dolores River. Continuous resistivity profile surveys along a 8-10 km reach of the Dolores River were conducted on March 7, May 16, and September 13 of 2017. The ERT surveys were conducted along 3 lines crossing the river and 1 line parallel to...
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In the fall of 2014 (October-November) the U.S. Geological Survey in cooperation with the U.S. Army Corps of Engineers collected sediment samples (suspended and bed material) at several sites on the Niobrara River in Nebraska near the Spencer Dam prior to, during, and immediately after a sediment-flushing event. Suspended-sediment samples were analyzed for sediment concentration and percent finer than sand. Bed sediment samples were analyzed for particle-size distribution using standard classes by sieve analysis. In addition, a Sequoia LISST Streamside particle-size analyzer (PSA) was deployed during the first week of the flush; this unit collected suspended-sediment concentration and grain-size data. Sampled sites...
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This data release includes simulation output from SnowModel (Liston and Elder, 2006), a well-validated process-based snow modeling system, and supporting snow, meteorological, and streamflow observations from the water years 2011 through 2015 (October 1, 2010, through September 30, 2015) across a 3,600 square kilometer model domain in the north-central Colorado Rocky Mountains. For each water year, SnowModel simulations were completed for a (1) baseline simulation, (2) bark-beetle disturbance condition simulation, (3) 2016 - 2035 future climate condition simulation (S1), and (4) 2046 - 2065 future climate condition simulation (S2). Sexstone and others (2018) provide details and summarize findings from each of the...
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The Grand Canyon geologic field photograph collection contains 1,211 geotagged photographs collected during 43 years of geologic mapping from 1967 to 2010. The photographs document some key geologic features, structures, and rock unit relations that were used to compile nine geologic maps of the Grand Canyon region published at 1:100,000 scale, and many more maps published at 1:24,000 scale. Metadata for each photograph include description, date captured, coordinates, and a keyword system that places each photograph in one or more of the following categories: arches and windows, breccia pipes and collapse structures, faults and folds, igneous rocks, landslides and rockfalls, metamorphic rocks, sedimentary rocks,...
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The US Geological Survey, in cooperation with the National Park Service, mapped 35 7.5-minute quadrangles, within a 2-mile-wide+ corridor centered on the Parkway, from BLRI (Blue Ridge Parkway) Mile Post (MP) 0 near Afton, Virginia southward to MP 218 at Cumberland Knob, approximately 1.3 km south of the Virginia – North Carolina State Line. Detailed bedrock geologic mapping for this project was conducted at 1:24,000-scale by systematically traversing roads, trails, creeks, and ridges within and adjacent to the 2-mile-wide+ corridor along the 216.9-mile length of the BLRI in Virginia. Geologic data at more than 23,000 station points were collected during this project (September 2009 – February 2014), with approximately...
Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Adney Gap, Air Bellows Gap, Alligator Back Formation, Antietam Formation, Ashe Formation, All tags...
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This data release contains aggregated data records documenting the implementation of USDA conservation practices on farms within the Chesapeake Bay watershed. The data are supplied as annual totals aggregated by county, and by eight digit hydrologic unit code (HUC-8) watershed. The initial data release covers 2007-2017, and updates are planned for December of each year. The data provided here, and the processes used to aggregate them, are thoroughly described in "Agricultural conservation practice implementation in the Chesapeake Bay watershed supported by the U.S. Department of Agriculture" by Hively and others (2018) available at https://doi.org/10.3133/ds1102 Contents: Aggregated_Data_Records_Describing_USDA_Conservation_Practices_Implemented_Within_the_Chesapeake_Bay_Waters...
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The State of Louisiana experienced widespread flooding during the extreme rainfall events of March and August 2016. The City of Central, Louisiana, which lies above the confluence of the Amite and Comite Rivers, is bordered on the east and west, respectively, by these rivers. The city incurred extensive damage from both events, in particular the August 2016 flood in which the river basins received up to 30 inches of documented rainfall. Many streamgages in the area recorded peak-of-record flood levels from the event. The U.S. Geological Survey (USGS) in cooperation with the City of Central, created a digital flood inundation map library to depict estimated areal extents and depth of flooding along 14.5 and 20.2...
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To support an investigation of the effectiveness of a large-scale river restoration project, several types of field data were collected from two gravel-bed reaches of the regulated lower Merced River in California's Central Valley, primarily in the fall of 2016. These data sets were intended to characterize salmon spawning habitat and identify factors influencing spawning site selection. This parent data release includes links to child pages for the following data sets: 1) Bulk samples of streambed sediment used to characterize the subsurface grain size distribution. 2) Pebble counts used to characterize the sediment grain size distribution of the bed surface. 3) Force gage measurements used to parameterize a...


map background search result map search result map Plume on Mount St. Helens. Skamania County, Washington. 1983. The August Mount St. Helens lobe extrusion. Skamania County, Washington. 1982. Taking deformation readings in winter at Mount St. Helens. Skamania County, Washington. 1983. Coldwater Lake Exit Early Warning Flood Gage. Mount St. Helens, Cowlitz County, Washington. 1983. Death Valley National Park, California. An unusually luxuriant and tall growth of willows lines the banks of Grapevine Creek at Scotty's Castle (background) surrounded by nearly barren hills. Detailed geologic mapping geodatabase for the Blue Ridge Parkway in Virginia with station point photographs Systematic Literature Review of Climate Change Impacts to Inland Fishes SnowModel simulations and supporting observations for the north-central Colorado Rocky Mountains during water years 2011 through 2015 Continuous resistivity profiling, direct current resistivity, and frequency domain electromagnetic data for the Dolores River, Paradox Valley, Colorado, 2017 Niobrara River suspended-sediment and bed-sediment data collected during hydroelectric dam flush near Spencer, Nebr., October through November, 2014 Data Used to Characterize Peak Streamflows and Flood Inundation Resulting from Hurricane Harvey of Selected Areas in Southeastern Texas and Southwestern Louisiana, August–September 2017 Geologic and Related Photographs of the Grand Canyon Region (1967–2010) Groundwater-Level Altitudes and Long-term Groundwater-Level Changes in the Chicot, Evangeline, and Jasper Aquifers, Houston-Galveston Region, Texas, 2018 Flood Inundation Maps for the Amite and Comite Rivers from State Highway 64 to U.S. Highway 190 – City of Central, Louisiana Aggregated Data Records Describing USDA Conservation Practices Implemented Within the Chesapeake Bay Watershed Field measurements for characterizing salmon spawning habitat in two restored reaches of the lower Merced River, California Coastal wetlands from Jamaica Bay to western Great South Bay, New York Aerial view of explosion pit on pumice plain. Mount St. Helens, Skamania County, Washington. 1980. Red laser beam on Harry's Ridge as viewed from Mount St. Helens crater. Skamania County, Washington. 1982. View of Mount St. Helens dome after sunrise. Skamania County, Washington. 1982. Field measurements for characterizing salmon spawning habitat in two restored reaches of the lower Merced River, California Continuous resistivity profiling, direct current resistivity, and frequency domain electromagnetic data for the Dolores River, Paradox Valley, Colorado, 2017 Flood Inundation Maps for the Amite and Comite Rivers from State Highway 64 to U.S. Highway 190 – City of Central, Louisiana Niobrara River suspended-sediment and bed-sediment data collected during hydroelectric dam flush near Spencer, Nebr., October through November, 2014 Coastal wetlands from Jamaica Bay to western Great South Bay, New York Geologic and Related Photographs of the Grand Canyon Region (1967–2010) Coldwater Lake Exit Early Warning Flood Gage. Mount St. Helens, Cowlitz County, Washington. 1983. Groundwater-Level Altitudes and Long-term Groundwater-Level Changes in the Chicot, Evangeline, and Jasper Aquifers, Houston-Galveston Region, Texas, 2018 Death Valley National Park, California. An unusually luxuriant and tall growth of willows lines the banks of Grapevine Creek at Scotty's Castle (background) surrounded by nearly barren hills. Detailed geologic mapping geodatabase for the Blue Ridge Parkway in Virginia with station point photographs Aggregated Data Records Describing USDA Conservation Practices Implemented Within the Chesapeake Bay Watershed Data Used to Characterize Peak Streamflows and Flood Inundation Resulting from Hurricane Harvey of Selected Areas in Southeastern Texas and Southwestern Louisiana, August–September 2017 Systematic Literature Review of Climate Change Impacts to Inland Fishes