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Mapping karst groundwater flow paths and delineating recharge areas for springs in the Little Sequatchie and Pryor Cove watersheds, Tennessee
The Little Sequatchie River and Pryor Cove Creek watersheds are located in southern Tennessee and drain the eastern escarpment of the Cumberland Plateau to the Sequatchie River. The Little Sequatchie River has the largest drainage area of any Sequatchie River tributary, with over 130 square miles in the topographic confines of the watershed. The hydrology of both watersheds has been largely alte
Tennessee Karst Groundwater Dye Tracing Water Year 2022
Karst hydrologic systems are important resources in the state of Tennessee both as drinking water resources and as centers for possible biological diversity. These systems are susceptible to contamination due to the inherent connectivity between surface water and groundwater in karst landscapes. A partnership between the U.S. Geological Survey (USGS) and Tennessee Department of Conservation (TDEC)
Isotopic compositions (Sr, Nd, Hf, Pb) of Quaternary volcanic rocks of northern Harrat Rahat, Kingdom of Saudi Arabia
Isotopic compositions (87Sr/86Sr, 143Nd/144Nd, 176Hf/177Hf, 206Pb/204Pb, 207Pb/204Pb, 208Pb/204Pb) and major oxide and trace element concentrations of Quaternary basalts, hawaiites, mugearites, benmoreites, and trachytes from northern Harrat Rahat, Kingdom of Saudi Arabia.
USGS CoastCam at DUNEX: Calibration Data
Two digital video cameras were temporarily installed at the U.S. Fish and Wildlife Service (USFWS) Pea Island National Wildlife Refuge (PINWR) in North Carolina (NC), as part of the DUring Nearshore Event eXperiment (DUNEX). DUNEX was a collaborative community-led experiment that took place in the fall of 2021 along the Outer Banks of NC, with the goal of improving the understanding, observational
Digital Data for a Three-Dimensional Geologic Map of the San Andreas Fault Zone Between Gold Hill and Pinnacles National Park, California
A three-dimensional geologic map was created by assembling eight geologic cross sections derived from geologic mapping, potential field geophysics, and petroleum well logs. The central feature of the map is the San Andreas Fault, with many other prominent structural features depicted that express the regional transpressional tectonic setting. The subsurface interpretation was based on existing two
Digital Data for a Three-Dimensional Geologic Map of the San Andreas Fault Zone Between Gold Hill and Pinnacles National Park, California
A three-dimensional geologic map was created by assembling eight geologic cross sections derived from geologic mapping, potential field geophysics, and petroleum well logs. The central feature of the map is the San Andreas Fault, with many other prominent structural features depicted that express the regional transpressional tectonic setting. The subsurface interpretation was based on existing two
Treeband measurements of Taxodium distichum in coastal Louisiana, USA from August 2004 through April 2016
To study the long-term effects of hydrology and salinity on the health of these systems, we fitted dendrometer bands on selected trees in permanent forest productivity plots established between 2004 and 2006 within six baldcypress stands. Three of these stands were in freshwater sites permanently or seasonally flooded with low salinity (0.1-1.3 ppt), while the other three are affected by tide and
The Effects of Flow Extremes on Native and Non-native Stream Fishes in Puerto Rico
Globally, freshwater fishes are among the taxa most vulnerable to climate change but are generally understudied in tropical island ecosystems where climate change is predicted to alter the intensity, frequency, and duration of extreme flow events. These changes may impact stream ecosystems and native and non-native biota in complex ways. We compiled an extensive dataset of fish assemblages collect
Streamflow and total selenium concentration data for six Canadian sites in the Kootenay and Columbia River Basins (2004-2022) and scripts for trend analysis using R–QWTREND
A study to assess the potential for long-range transport of selenium from the Elk River valley (British Columbia, Canada) was completed by the U.S. Geological Survey (USGS) using an analysis of total selenium concentrations and loads at six sites in the Elk, Kootenay, and Columbia Rivers in British Columbia, Canada. This dataset contains discrete total selenium concentration data and daily streamf
Airborne Magnetic and Radiometric Survey, Colorado Mineral Belt, Southwest Block, 2023
This data release provides digital flight-line and gridded data for a high-resolution airborne magnetic and radiometric survey over the southwestern portion of the Colorado Mineral Belt, southwestern Colorado. The Colorado Mineral Belt is a broad, northeast-southwest trending alignment of historic mining districts that have produced multiple types of commodities, including critical minerals that a
Demonstration of simulating agricultural water demands using the MODFLOW-OWHM2 Farm Process with an example from Paso Robles Basin
The Paso Robles groundwater basin (PR) encompasses approximately 500,000 acres and is located in the upper portion of the Salinas River watershed in the San Luis Obispo (SLO) and Monterey counties, Central Coast region of California (.\ancillary\Figures\Figure 1. Site Map.tif from this data release; California Department of Water Resources, 2003). Agriculture makes up a large part of the regional
Spectral reflectance data of rock and soil in Prince William Sound, Alaska
An ASD FieldSpec 4 Hi-Res NG Spectroradiometer was used to collect the reflectance properties of soil and rock in Prince William Sound (Figure 1). Reflectance is a property of the material being observed, being the ratio of the amount of light leaving a target to the amount of light striking the target. Reflectance is a unitless value from 0 to 1, where a value of 0 indicates that the material abs