Data

This data release provides a Geologic Map Schema (GeMS, USGS NCGMP, 2020) version of the State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States (Horton and others, 2017). The SGMC provides spatial data for 48 state geologic maps that range from 1:50,000 to 1:1,000,000 scale. The GeMS version of the SGMC provides updated data for Arkansas, Mississippi...

This data release provides tabulated geomorphic data from surveys for nine reaches along the Bad River and its tributaries the Marengo and Potato Rivers, ranging from 2003 to 2024. Included on this page is a tabulated inventory of all the data files (child items) and additional information associated with each reach. Child items are listed by their corresponding reach number. As data was...

Multiple surface geophysical methods were used to characterize the hydrogeology and potential groundwater flow pathways for spring discharge near Quitobaquito Spring, located in Organ Pipe Cactus National Monument, AZ. The direct-current resistivity method was used with an electrical resistivity tomography (ERT) survey along six line-locations to determine groundwater elevation...

This data release contains (1) geophysical grids, (2) horizontal gravity and residual magnetic gradient maxima and (3) inputs to a gravity inversion of Cenozoic basin thickness based on gravity measurements of the Blythe region of California and Arizona. Gridded data (geotiffs.zip) consist of the input isostatic gravity grid as well as grids of Cenozoic basin thickness and bedrock...

The U.S. Geological Survey (USGS) in cooperation with the California State Water Resources Control Board (State Water Board) compiled and analyzed data for mapping groundwater salinity, characterizing aquifer systems, and documenting the effects of oil-field water disposal and well integrity issues in the Midway Valley area of San Joaquin Valley, California, associated with the Midway...

This product is a georectified and tonally balanced image mosaic of aerial photographs collected in February 1935 by the U.S. Soil Conservation Service along the floodplain of the Colorado River in the Lake Mead region of Arizona and Nevada. This dataset was developed to portray the geologic characteristics of the lower Colorado River floodplain and can serve as a resource to help create...

This data release contains coastal wetland synthesis products for the Delaware Bay-facing New Jersey 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...

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...

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...