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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Assessing adaptive management to reduce ungulate aggregations: A case study involving the supplemental feeding of elk. Assessing adaptive management to reduce ungulate aggregations: A case study involving the supplemental feeding of elk.
This data release contains summarized elk aggregation metrics generated from Global Positioning System (GPS) collar locations of elk on the National Elk Refuge in Jackson, Wyoming. Aggregation metrics include annual kernel density estimates of the area used by elk on the National Elk Refuge, daily measures of inter-elk distances, daily pairwise proximity, and daily mean proximity and...
Dust mass and horizontal aeolian sediment flux data from a sampler network on the Colorado Plateau, USA Dust mass and horizontal aeolian sediment flux data from a sampler network on the Colorado Plateau, USA
These data were compiled to assess time series data of aeolian sediment collections across varying climates, vegetation cover, and land uses on the Colorado Plateau. The objectives of our study were to interpret aeolian erosion and deposition processes and measure horizontal sediment flux over the span of two decades amid rapidly changing climate conditions and multiple land use changes...
Down Selected Artemis III Candidate Landing Site Navigational Grids Down Selected Artemis III Candidate Landing Site Navigational Grids
USGS is assessing the feasibility of map projections and grid systems for lunar surface operations. We propose developing a new Lunar Transverse Mercator (LTM), the Lunar Polar Stereographic (LPS), and the Lunar Grid Reference Systems (LGRS). We have also designed additional grids designed to NASA requirements for astronaut navigation, referred to as LGRS in Artemis Condensed Coordinates...
Geochemical, petrophysical, and drill hole database for Mesoproterozoic igneous rocks and iron ore deposits of the St. Francois Mountains, southeast Missouri Geochemical, petrophysical, and drill hole database for Mesoproterozoic igneous rocks and iron ore deposits of the St. Francois Mountains, southeast Missouri
Geochemical, petrophysical, and depth to the Paleozoic-Precambrian basement interface from drill hole data for Mesoproterozoic igneous rocks and iron ore deposits of the St. Francois Mountains, southeast Missouri (MMDB) are provided in this data release. The samples were collected as part of various agency programs and projects from 1967 through 2019. Most samples were collected by...
Datasets and R Scripts Used for the Water-Budget Analysis of the Medina and Diversion Lake System, Bandera, Bexar, and Medina Counties, Texas, 1955–2022 Datasets and R Scripts Used for the Water-Budget Analysis of the Medina and Diversion Lake System, Bandera, Bexar, and Medina Counties, Texas, 1955–2022
The U.S. Geological Survey—in cooperation with the San Antonio Water System and the Edwards Aquifer Authority—used data collected during four different periods (March 1955–August 1964, October 1995–September 1996, March 2001–June 2002, and March 2017–October 2022) as part of a new study to refine previously derived relations between the altitude of the water surface of Medina Lake and...
Groundwater-Level Altitudes and Long-Term Groundwater-Level Changes in the Chicot and Evangeline (undifferentiated) and Jasper aquifers, greater Houston area, Texas, 2024 Groundwater-Level Altitudes and Long-Term Groundwater-Level Changes in the Chicot and Evangeline (undifferentiated) and Jasper aquifers, greater Houston area, Texas, 2024
The U.S. Geological Survey (USGS) in cooperation with the Harris‐Galveston Subsidence District, City of Houston, Fort Bend Subsidence District, Lone Star Groundwater Conservation District, and Brazoria County Groundwater Conservation District produced this dataset of groundwater‐level altitudes and groundwater‐level altitude changes in the Chicot and Evangeline aquifers (undifferentiated...