Data

This data release contains coastal wetland synthesis products for the New Hampshire salt marshes. Metrics for resiliency, including the unvegetated to vegetated ratio (UVVR), marsh elevation, tidal range, and lifespan are calculated for smaller units delineated from a digital elevation model, providing the spatial variability of physical factors that influence wetland health. The U.S...

The hulihia (Hawaiian for "upheaval") of 2018 represents a significant benchmark in the history of Hawaiian volcanology. Kīlauea experienced a historically damaging eruption along its lower East Rift Zone in association with the volcano’s largest summit collapse in over a century, which forced the Hawaiian Volcano Observatory to vacate its longtime post at Uēkahuna on the rim of...

This data release contains geospatial data compiled from an investigation into the hydrology of Moreau Lake, in Moreau Lake State Park, Town of Moreau, Saratoga County, New York (Heisig, 2026). This compilation included well logs, seismic measurements, and measurements of water levels in the area to define the hydrogeologic framework and groundwater flow system around the lake...

This U.S. Geological Survey data release presents flood-inundation extents and hydraulic characteristics of the Carson Slough, Ash Meadows National Wildlife Refuge, Nevada. These datasets were created by simulating streamflow conditions for eight rainfall scenarios (100-, 50-, 25-, 10-year floods under 6- and 24-hour rainfall durations), under three terrain conditions (2023, peak-flow...

The Emmons Lake volcanic center is a spatially clustered group of stratovolcanoes and calderas on the Alaska Peninsula near Cold Bay, Alaska. The volcanic center is characterized by several ice- and snow-clad stratovolcanoes located within and along the margins of a nested-caldera complex that includes Emmons Lake. A shieldlike ancestral edifice (ancestral Mount Emmons) is truncated by...

The karstic Edwards and Trinity aquifers are classified as major sources of water in south-central Texas by the Texas Water Development Board, and both are classified as major aquifers by the State of Texas. The Edwards and Trinity aquifers developed because of the original depositional history of the carbonate limestone and dolomite rocks that contain them, and the primary and secondary...

The karstic Edwards and Trinity aquifers are classified as major sources of water in south-central Texas by the Texas Water Development Board, and both are classified as major aquifers by the State of Texas. The original depositional history of the carbonate limestone and dolomite rocks that contain the Edwards and Trinity aquifers provided the starting point from which primary and...

Digital flood-inundation maps for a 2.7-mile reach of Rio Grande De Loiza in and near Caguas, Puerto Rico, were created by the U.S. Geological Survey (USGS) with funding from the U.S. Geological Survey Supplemental Oversight Team which received funding for this effort through Title VII of Division N in the Consolidated Appropriations Act, 2023 (Public Law 117–328). Flood profiles were...

The U.S. Geological Survey (USGS), in cooperation with the National Marine Sanctuary Program of the National Oceanic and Atmospheric Administration (NOAA), has conducted seabed mapping and related research in the Stellwagen Bank National Marine Sanctuary (SBNMS) region since 1993. The interpretive datasets and source information presented here are for quadrangle 3, which is one of 18...

In 2001, the Alaska Division of Geological & Geophysical Surveys (DGGS) published a database compiling geotechnical borehole and well-log records in Anchorage, Alaska (Combellick and others, 2001). This data release builds on that database, adding some additional cone penetration test (CPT) and well log records in broader areas across the state (Alaska Department of Natural Resources...

This U.S. Geological Survey (USGS) data release provides a digital geospatial database for the geologic map of the central Pioneer Mountains, Blaine and Custer counties, central Idaho (Dover, 1983). Attribute tables and geospatial features (points, lines, and polygons) conform to the Geologic Map Schema (USGS NCGMP, 2020) and represent the geologic map as published in USGS Miscellaneous

This U.S. Geological Survey (USGS) data release provides a digital geospatial database for the geologic map of the Craig 1 degree x 2 degrees quadrangle, northwestern Colorado (Tweto, 1976). Attribute tables and geospatial features (points, lines, and polygons) conform to the Geologic Map Schema (USGS NCGMP, 2020) and represent the geologic map as published in the USGS Miscellaneous...