This dataset contains catchment-averaged metrics of hypsometry and normalized channel steepness for selected catchments along the Powell River region in the Eastern Tennessee seismic zone.

In August 2024, the U.S. Geological Survey Idaho Water Science Center (USGS IDWSC), in cooperation with the United States Bureau of Reclamation (USBR), completed bathymetric and topographic surveys at Black Canyon Reservoir near Emmett, Idaho using a multibeam sonar and boat-mounted Light Detection and Ranging (LiDAR). The bathymetric and topographic data generally include complete data coverage from Black Canyon Dam to Black Canyon Park with sparse data coverage upstream of Black Canyon Park and data represent conditions on August 19-20, 2024 when the water surface elevation was steady at about 2,497.8 feet (Reclamation Project Vertical Datum). Prior to the bathymetric and topographic surveys, USBR completed aerial surveys using uncrewed aircraft systems to collect aerial imagery and develop elevation models using structure from motion techniques. These aerial surveys were completed on November 28-29, 2023 during a period of reservoir pool drawdown when the water surface elevation was between about 2,461 feet and 2,465.7 feet (Reclamation Project Vertical Datum). While these topographic elevation data provided high-resolution and spatially expansive coverage, the structure from motion technique does not perform well for reconstructing submerged topography. As such, IDWSC was tasked with collecting bathymetric data in areas where elevation data could not be reconstructed from aerial surveys. Collectively, bathymetric data from USGS IDWSC and topographic data from USBR may be used for further improvement of existing reservoir stage-capacity relationships of Black Canyon Reservoir.

These datasets provide lineament mapping, catchment-averaged metrics of hypsometry and channel steepness, field observations, and a structure from motion model and orthomosiac photograph of sites in the Eastern Tennessee seismic zone in eastern Tennessee, USA. The lineament mapping contains linework of possible neotectonic features mapped from 1-m lidar data. Catchment-averaged metric of hypsometry and channel steepness are for selected catchments along the Powell River in northern Tennessee. Field observations provides points and notes of reconnaissance fieldwork to describe and document select lineaments in the Powell River and Oak Ridge areas. The structure from motion model and orthomosiac photograph document the Little River exposure described in previous studies. These datasets are associated with the manuscript: Thompson Jobe, J. A., R. W. Briggs, R. D. Gold, L. Bauer, and C. Collett (in review). Limited evidence for Late Pleistocene tectonic surface deformation in the Eastern Tennessee Seismic Zone, USA.

These datasets provide lineament mapping, catchment-averaged metrics of hypsometry and channel steepness, field observations, and a structure from motion model and orthomosiac photograph of sites in the Eastern Tennessee seismic zone in eastern Tennessee, USA. The lineament mapping contains linework of possible neotectonic features mapped from 1-m lidar data. Catchment-averaged metric of hypsometry and channel steepness are for selected catchments along the Powell River in northern Tennessee. Field observations provides points and notes of reconnaissance fieldwork to describe and document select lineaments in the Powell River and Oak Ridge areas. The structure from motion model and orthomosiac photograph document the Little River exposure described in previous studies. These datasets are associated with the manuscript: Thompson Jobe, J. A., R. W. Briggs, R. D. Gold, L. Bauer, and C. Collett (in review). Limited evidence for Late Pleistocene tectonic surface deformation in the Eastern Tennessee Seismic Zone, USA.

In 2016, the U.S. Geological Survey, in cooperation with the New York State Department of Environmental Conservation, collected horizontal-to-vertical seismic soundings at 31 locations in the Owasco Inlet valley, Cayuga and Tompkins Counties, New York to help determine thickness of the unconsolidated deposits. The HVSR technique, commonly referred to as the passive-seismic method, is used to estimate the thickness of unconsolidated sediments and the depth to bedrock (Lane and others, 2008; Fairchild and others, 2013). The passive-seismic method uses a single, broad-band three-component (two horizontal and one vertical) seismometer to record ambient seismic noise. In areas that have a strong acoustic contrast between the bedrock and overlying sediments, the seismic noise induces resonance at frequencies that range from about 0.3 to 40 Hz. The ratio of the average horizontal-to-vertical spectrums produces a spectral-ratio curve with peaks at fundamental and higher-order resonance frequencies. The spectral ratio curve (the ratio of the averaged horizontal-to-vertical component spectrums) is used to determine the fundamental resonance frequency that can be used along with an average shear-wave velocity or a power-law regression equation to estimate sediment thickness and depth to bedrock (Lane and others, 2008; Brown and others, 2013; Fairchild and others, 2013; Chandler and others, 2014; Johnson and Lane, 2016; and Heisig and Fleisher, 2022). The HVSR data presented in this data release were collected at each site for 30 minutes using a Tromino Model TEP-3C three-component seismometer. The data were processed with Grilla 2012 version 6.2 software to: 1) remove anthropogenic noise, 2) convert the time-domain data to frequency domain, 3) compute and plot the spectral ratio curve, and 4) determine the resonance frequency. This data release presents the resonance frequency peaks identified from the HVSR measurements. Raw and processed HVSR data for each HVSR measurement are presented in the attached files. The HVSR data-collection sites are designated by a county sequential numbering system (CYHVSR1, TMVSR64, etc. where "CY" indicates Cayuga County and "TM" indicates Tompkins County).

In 2016, the U.S. Geological Survey, in cooperation with the New York State Department of Environmental Conservation, collected horizontal-to-vertical seismic soundings at 31 locations in the Owasco Inlet valley, Cayuga and Tompkins Counties, New York to help determine thickness of the unconsolidated deposits. The HVSR technique, commonly referred to as the passive-seismic method, is used to estimate the thickness of unconsolidated sediments and the depth to bedrock (Lane and others, 2008; Fairchild and others, 2013). The passive-seismic method uses a single, broad-band three-component (two horizontal and one vertical) seismometer to record ambient seismic noise. In areas that have a strong acoustic contrast between the bedrock and overlying sediments, the seismic noise induces resonance at frequencies that range from about 0.3 to 40 Hz. The ratio of the average horizontal-to-vertical spectrums produces a spectral-ratio curve with peaks at fundamental and higher-order resonance frequencies. The spectral ratio curve (the ratio of the averaged horizontal-to-vertical component spectrums) is used to determine the fundamental resonance frequency that can be used along with an average shear-wave velocity or a power-law regression equation to estimate sediment thickness and depth to bedrock (Lane and others, 2008; Brown and others, 2013; Fairchild and others, 2013; Chandler and others, 2014; Johnson and Lane, 2016; and Heisig and Fleisher, 2022). The HVSR data presented in this data release were collected at each site for 30 minutes using a Tromino Model TEP-3C three-component seismometer. The data were processed with Grilla 2012 version 6.2 software to: 1) remove anthropogenic noise, 2) convert the time-domain data to frequency domain, 3) compute and plot the spectral ratio curve, and 4) determine the resonance frequency. This data release presents the resonance frequency peaks identified from the HVSR measurements. Raw and processed HVSR data for each HVSR measurement are presented in the attached files. The HVSR data-collection sites are designated by a county sequential numbering system (CYHVSR1, TMVSR64, etc. where "CY" indicates Cayuga County and "TM" indicates Tompkins County).

This dataset contains manually developed 5-, 10-, and 500-ft contours for the Harney Basin, Oregon aquifer system shallow and deep potentiometric-surface maps. The potentiometric-surfaces show altitude at the water-table surface (shallow) and at which the water level would have risen in tightly-cased wells deeper than 100 ft (deep) and generally represents synoptic conditions during February–March of 2018. The water-table map was developed using groundwater-level measurements from shallow wells (generally less than 100 ft deep in the lowlands) and the altitudes of springs and gaining stream reaches and constrained by the altitude of the land surface. The deeper potentiometric-surface map was developed using measurements from wells generally more than 100 ft deep in the lowlands. The hydraulic-head distributions depicted are generalizations. The large study area, availability of water-level measurements, the distribution of wells across Harney Basin, and resource limitations precluded mapping all the complexities of the head distribution. Contours are most detailed and have 10-ft intervals (with the exception of the 4,095-ft contour) in the Harney Basin lowlands where data are more abundant, and the land surface is relatively flat. Groundwater heads of 4,200 ft or more were mapped using 500-ft contour intervals and generally coincide with upland areas where wells are sparse and groundwater head is strongly controlled by topography.

This dataset contains manually developed 5-, 10-, and 500-ft contours for the Harney Basin, Oregon aquifer system shallow and deep potentiometric-surface maps. The potentiometric-surfaces show altitude at the water-table surface (shallow) and at which the water level would have risen in tightly-cased wells deeper than 100 ft (deep) and generally represents synoptic conditions during February–March of 2018. The water-table map was developed using groundwater-level measurements from shallow wells (generally less than 100 ft deep in the lowlands) and the altitudes of springs and gaining stream reaches and constrained by the altitude of the land surface. The deeper potentiometric-surface map was developed using measurements from wells generally more than 100 ft deep in the lowlands. The hydraulic-head distributions depicted are generalizations. The large study area, availability of water-level measurements, the distribution of wells across Harney Basin, and resource limitations precluded mapping all the complexities of the head distribution. Contours are most detailed and have 10-ft intervals (with the exception of the 4,095-ft contour) in the Harney Basin lowlands where data are more abundant, and the land surface is relatively flat. Groundwater heads of 4,200 ft or more were mapped using 500-ft contour intervals and generally coincide with upland areas where wells are sparse and groundwater head is strongly controlled by topography.

This data set represents the extent of the Miocene basaltic-rock aquifers in the states of Idaho, Oregon, Washington, California, and Nevada.

This data set represents the extent of the Miocene basaltic-rock aquifers in the states of Idaho, Oregon, Washington, California, and Nevada.