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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State and Transition Classifications for Ecological Sites in the Upper Colorado River Basin, USA State and Transition Classifications for Ecological Sites in the Upper Colorado River Basin, USA
These data were compiled to support systematic analysis of ecological state and transition dynamics at the landscape scale in the Upper Colorado River Basin using published Natural Resources Conservation Service (NRCS) Ecological Site Descriptions (ESDs). Ecological sites are soil and climate-based classes of land that differ in potential plant communities and responses to disturbance...
Airborne electromagnetic and magnetic survey near Coalinga and Pyramid Hills, California, 2022 Airborne electromagnetic and magnetic survey near Coalinga and Pyramid Hills, California, 2022
Airborne electromagnetic (AEM) and magnetic survey data were collected during November 2022 over a total distance of 2,372 line kilometers over two study areas in the Pleasant Valley near the city of Coalinga, California and the region surrounding the Pyramid Hills. These data were collected adjacent to areas of oil and gas production in support of groundwater salinity mapping and...
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...
Aquaculture, domestic, irrigation, and livestock water withdrawals from the Sparta aquifer by parish in Louisiana, 2021 Aquaculture, domestic, irrigation, and livestock water withdrawals from the Sparta aquifer by parish in Louisiana, 2021
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...
High resolution natural color and light detection and ranging (LiDAR) collected by uncrewed aircraft system (UAS) for mapping forest health post forest thinning at Sawmill Springs in the Kaibab National Forest, AZ, 2025 High resolution natural color and light detection and ranging (LiDAR) collected by uncrewed aircraft system (UAS) for mapping forest health post forest thinning at Sawmill Springs in the Kaibab National Forest, AZ, 2025
The U.S. Geological Survey collected low-altitude airborne natural color imagery and LIDAR data via a fixed-wing uncrewed aircraft system (UAS) for mapping Sawmill Springs area in the Kaibab National Forest in Arizona. Visual imagery was collected in joint photographic experts group (jpg) (for color imagery) format and Structure-from-Motion (SfM) photogrammetry techniques were applied to...
Tephra accumulation and wind data for Kīlauea’s 2008–2018 lava lake eruption Tephra accumulation and wind data for Kīlauea’s 2008–2018 lava lake eruption
The 2008–2018 summit eruption at Kīlauea formed an active and slowily expanding lava lake within Halemaʻumaʻu Crater that lasted 10 years before draining. To consistently collect proximal tephra ejected from the lava lake, which was nested within the new, informally named “Overlook crater,” a network of ten plastic buckets was established early and emptied on most days of the eruption...
Altitude of the Potentiometric Surfaces of the Memphis aquifer, Shelby County, TN Altitude of the Potentiometric Surfaces of the Memphis aquifer, Shelby County, TN
The Memphis aquifer is the primary source of groundwater for municipal, industrial, and commercial uses in the Memphis area. The Memphis area includes all of Shelby County and parts of Tipton and Fayette Counties in Tennessee, parts of DeSoto and Marshall Counties in Mississippi, and part of Crittenden County in Arkansas (Kingsbury, 2018). Long-term withdrawals form the aquifer since...
Reflectance data from vitrinite and bituminite in the Kimmeridge Clay Formation supporting the ICCP Identification of Dispersed Organic Matter Working Group round robin exercises from 2016 to 2020 Reflectance data from vitrinite and bituminite in the Kimmeridge Clay Formation supporting the ICCP Identification of Dispersed Organic Matter Working Group round robin exercises from 2016 to 2020
Three round robin exercises (RRE) aimed at characterizing bituminite and testing the reproducibility of random vitrinite (VRo %) and bituminite (BitRo %) reflectance measurements of the Kimmeridge Clay Formation were conducted in 2016, 2018, and 2020. This work was conducted by the Identification of Dispersed Organic Matter Working Group (IDOM WG) of the International Committee for Coal...