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Geochemical and Geophysical Characteristics of the Conterminous U.S. Geochemical and Geophysical Characteristics of the Conterminous U.S.
This dataset is a collection of 12 rasters depicting geochemical and geophysical characteristics of surface or near surface geology. These rasters were created to quantify the influence of geology on surface and critical zone processes like stream water chemistry, soil formation, ecologic processes, and species distributions by providing estimates of spatial variability in current...
Topographic and bathymetric data, structure from motion imagery, and ground control data collected at Marconi Beach, Wellfleet, MA in March 2022, U.S Geological Survey Field Activity 2022-014-FA Topographic and bathymetric data, structure from motion imagery, and ground control data collected at Marconi Beach, Wellfleet, MA in March 2022, U.S Geological Survey Field Activity 2022-014-FA
The data in this release map the beach and nearshore environment at Marconi Beach in Wellfleet, MA and provide updated environmental context for the 2021 CoastCam installation that looks out at the coast shared by beachgoers, shorebirds, seals, and sharks. This is related to the field activity 2022-014-FA and a collaboration with the National Park Service at Cape Cod National Seashore to...
Rangewide Occupancy and Post-Fire Recovery of California Gnatcatchers in Southern California (ver. 3.0, October 2024) Rangewide Occupancy and Post-Fire Recovery of California Gnatcatchers in Southern California (ver. 3.0, October 2024)
This project has two goals: Goal 1: The goal of this project is to conduct a statistically rigorous study of occupancy to determine the post-fire recovery of gnatcatchers and coastal sage scrub vegetation with the goal of informing management before, during, and after fire. Goal 2: The goal of this project is to conduct rangewide surveys to determine California Gnatcatcher occupancy at a...
Totatlanika River Terrace Luminescence Age Data Collected 2020-2022 Totatlanika River Terrace Luminescence Age Data Collected 2020-2022
This dataset comprises three tables containing infrared stimulated luminescence (IRSL) ages and related data from samples collected at seven terrace sites along the Totatlanika River in central Alaska in 2020 and 2021. The IRSL ages and data were generated from the samples at the Utah State University Luminescence Lab. The ages were determined to enable computation of rates of bedrock...
Central Valley Hydrologic Model version 2 (CVHM2): Observation Data (Groundwater Level, Streamflow) (ver. 3.0, April 2026) Central Valley Hydrologic Model version 2 (CVHM2): Observation Data (Groundwater Level, Streamflow) (ver. 3.0, April 2026)
This digital dataset includes two sets of observational data (groundwater level and streamflow) used to calibrate the updated Central Valley Hydrologic Model (CVHM2). Subsidence and Aquifer-System Compaction Data Used as Observations are available in the companion data release (Brandt and others, 2026; https://doi.org/10.5066/P144BREY). CVHM2 is a tool that can be used to quantify the
Central Valley Hydrologic Model version 2 (CVHM2): Subsidence and Aquifer-System Compaction Data Used as Observations Central Valley Hydrologic Model version 2 (CVHM2): Subsidence and Aquifer-System Compaction Data Used as Observations
The Central Valley, and particularly the San Joaquin Valley, has a long history of land subsidence caused by groundwater development. The extensive withdrawal of groundwater from the unconsolidated deposits of the San Joaquin Valley lowered groundwater levels and caused widespread land subsidence—reaching 9 meters by 1981. More than half of the thickness of the aquifer system is composed...