Data Releases
The data collected and the techniques used by USGS scientists should conform to or reference national and international standards and protocols if they exist and when they are relevant and appropriate. For datasets of a given type, and if national or international metadata standards exist, the data are indexed with metadata that facilitates access and integration.
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GIS data for the geologic map of the central Mayacmas Mountains and The Geysers steam field, Sonoma, Lake, and Mendocino counties, California GIS data for the geologic map of the central Mayacmas Mountains and The Geysers steam field, Sonoma, Lake, and Mendocino counties, California
This file geodatabase contains a GeMS-compliant 1:24,000-scale digital geologic map of The Geysers geothermal field and surrounding region in the northern California Coast Ranges and the Mayacamas Mountains. The database includes geologic map unit polygons, contacts, faults, geologic linework, structural orientation data, overlays, and supporting tables such as DataSources...
Bluegill Size Structure and Growth Data for Six States in the Midwestern USA Bluegill Size Structure and Growth Data for Six States in the Midwestern USA
Bluegill length and age data from standardized surveys conducted during 2000-2021 were obtained from Indiana, Illinois, Iowa, Michigan, Wisconsin and Minnesota through direct requests. Some data were obtained through collaboration with Dr. Gretchen Hansen at the University of Minnesota. These data were used to calculate proportional size distribution (PSD), mean total length (TL) at age...
Bathymetric Model of Lower Darby Creek in Heinz National Wildlife Refuge, Pennsylvania, USA Bathymetric Model of Lower Darby Creek in Heinz National Wildlife Refuge, Pennsylvania, USA
Bathymetric model and associated measurement data for Lower Darby Creek within the Heinz National Wildlife Refuge (NWR) near Philadelphia, Pennsylvania
Seasonal streamflow-metric trends for four United States coastal regions, 1943 through 2022 Seasonal streamflow-metric trends for four United States coastal regions, 1943 through 2022
The streamflow trends in this data release were computed as part of a study on trends in seasonal streamflows relevant to diadromous fish in four United States coastal regions. We investigated seasonal-flow trends at 1,155 gages for eight streamflow metrics from 1973 to 2022 and 89 gages from 1943 to 2022. Two of the regions are on the Pacific coast and two are on the Atlantic coast.
Aquaculture, domestic, irrigation, and livestock water withdrawals from the Sparta aquifer by parish in Louisiana, 2023 Aquaculture, domestic, irrigation, and livestock water withdrawals from the Sparta aquifer by parish in Louisiana, 2023
Since 1975, annual water use for Louisiana has been published on a 5-year basis and is used for a variety of purposes. As the Sparta aquifer is a heavily used aquifer, is the sole source of groundwater for many parishes in Louisiana, and recent withdrawals have exceeded the Sparta’s natural recharge, a more frequent compilation of water usage for the Sparta aquifer in Louisiana is needed...
Aquaculture, domestic, irrigation, and livestock water withdrawals from the Sparta aquifer by parish in Louisiana, 2022 Aquaculture, domestic, irrigation, and livestock water withdrawals from the Sparta aquifer by parish in Louisiana, 2022
Since 1975, annual water use for Louisiana has been published on a 5-year basis and is used for a variety of purposes. As the Sparta aquifer is a heavily used aquifer, is the sole source of groundwater for many parishes in Louisiana, and recent withdrawals have exceeded the Sparta’s natural recharge, a more frequent compilation of water usage for the Sparta aquifer in Louisiana is needed...