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Digital Surface Model and Orthoimagery of Iliamna Volcano and Johnson River, Lake Clark National Park, Alaska Digital Surface Model and Orthoimagery of Iliamna Volcano and Johnson River, Lake Clark National Park, Alaska
Aerial photography surveys of Iliamna Volcano and the Johnson River in Lake Clark National Park, Alaska, were conducted in late July and early August 2019 by fixed-wing aircraft to generate updated elevation data and high-quality orthoimagery. The surveys were flown by the National Park Service (NPS) Alaska Regional Office (AKRO) in partnership with the United States Geological Survey...
Digital Surface Models of the Kajaki Dam in the Helmand Valley, Afghansitan from 1952 Historical Aerial Photos. Digital Surface Models of the Kajaki Dam in the Helmand Valley, Afghansitan from 1952 Historical Aerial Photos.
This study applied historical aerial imagery and satellite imagery to create digital surface models (DSMs) of the Helmand River Valley situated in southwestern Afghanistan. The historical imagery, collected in 1952 by Fairchild Aerial Surveys Incorporated (FAS), at 1:40,000 scale, represents the earliest known aerial photographic archive of the Helmand Valley landscape. Structure-from...
Digital Terrain Models for Mars Sinuous Ridges and Alluvial Fans Projects Digital Terrain Models for Mars Sinuous Ridges and Alluvial Fans Projects
Metadata on this main landing page applies to all DTMs listed under Child Items, apart from USGS-made DTMs [HRSC DTM_75 (centered at -28.8N, 78.6E)_USGS and CTM DTM over "Crater L" (centered at -23.1N, 74.3E)_USGS]. Metadata associated with USGS-made DTMs are located with DTM files under their respective Child Item.
Digitized and Derivative Potentiometric Surface Datasets for the Mississippi River Valley Alluvial Aquifer Extent of Eastern Arkansas, Predevelopment to 2008 Digitized and Derivative Potentiometric Surface Datasets for the Mississippi River Valley Alluvial Aquifer Extent of Eastern Arkansas, Predevelopment to 2008
The Mississippi River Valley alluvial aquifer (MRVA) in eastern Arkansas is a major source of groundwater for public, industrial, agricultural, and aquaculture uses. Estimated withdrawals from the MRVA increased from 1,063 million gallons per day in 1965 (Halberg and Stephens, 1966) to 7,252 million gallons per day in 2005 (Holland, 2007). Potentiometric-surface maps, which represent the...
Digitized sonic velocity and density log data of the Eel River area, northern California Digitized sonic velocity and density log data of the Eel River area, northern California
Sonic velocity and density well logs in the Eel River area in northern California (Ferndale north Arcata) were digitized by hand. These logs are available as scanned files (pdfs and tiffs) on the California Division of Oil, Gas, and Geothermal Resources website (https://maps.conservation.ca.gov/doggr/wellfinder/). The data consist of transit times and bulk density measured downhole in...
Dilation and slip tendency for a portion of the Southern Bartlett Springs fault and surrounding fault zones in the Wilbur Springs area, Northern California Coast Ranges Dilation and slip tendency for a portion of the Southern Bartlett Springs fault and surrounding fault zones in the Wilbur Springs area, Northern California Coast Ranges
This dataset presents modeled values of dilation tendency and slip tendency for faults within and surrounding the Wilbur Springs region of northern California, including the Bartlett Springs Fault, Cross Springs Fault, Little Indian Valley Fault Zone, and a network of secondary structures. The region is actively deforming, as evidenced by ongoing uplift and folding, suggesting it is...
Direct Human-Impact Classifications for Selected Groundwater Wells in the Conterminous United States, model archive Direct Human-Impact Classifications for Selected Groundwater Wells in the Conterminous United States, model archive
This data release contains data used to develop and apply a model that estimates the level of direct human-impact on selected groundwater wells in the conterminous United States. An extreme gradient boosting model was developed to estimate the probability of minimal human-impact to water levels in groundwater wells. The model uses human-impact evaluations from regional groundwater...
Discharge measurements, air temperature, water temperature, and gage height data for select stream monitoring locations across Pennsylvania and Maryland piedmont mixed agriculture 2023 Discharge measurements, air temperature, water temperature, and gage height data for select stream monitoring locations across Pennsylvania and Maryland piedmont mixed agriculture 2023
As part of a larger study examining stream conditions and the effect of best management practices in the Chesapeake Bay watershed, thirty small streams across the Pennsylvania and Maryland piedmont physiographic province were instrumented and monitored for gage height (water level), water temperature, and air temperature using Onset HOBO sensors from March to September 2023. In addition...
Discharge measurements, air temperature, water temperature, and gage height data for select streams in Maryland-Washington, DC-Virginia developed Piedmont region (2024) Discharge measurements, air temperature, water temperature, and gage height data for select streams in Maryland-Washington, DC-Virginia developed Piedmont region (2024)
As part of a larger study examining stream conditions and the effect of Best Management Practices in the Chesapeake Bay watershed, thirty small streams in the developed Piedmont of Maryland, Washington, DC, and Virginia were instrumented and monitored for gage height (water level), water temperature, and air temperature using Onset HOBO sensors from March to September 2024. In addition...
Discrete chloride and specific conductance (SC) measurements, chloride-SC regression equations, and daily and hourly mean SC values and chloride predictions for 88 USGS water quality monitoring stations in the Delaware River Basin, 2019-2022 Discrete chloride and specific conductance (SC) measurements, chloride-SC regression equations, and daily and hourly mean SC values and chloride predictions for 88 USGS water quality monitoring stations in the Delaware River Basin, 2019-2022
Freshwater salinization, or the increase of dissolved ions like chloride, threaten freshwater streams and rivers across the globe. Continuous (e.g., daily or hourly mean) predictions of chloride concentration were used in an analysis to quantify the extent to which chloride concentrations exceeded ecological thresholds at U.S. Geological Survey (USGS) water quality monitoring sites...
Displacement and pore-pressure data from a field-scale landslide initiation experiment at Mount Kaba-san, Japan, November 14, 2003 Displacement and pore-pressure data from a field-scale landslide initiation experiment at Mount Kaba-san, Japan, November 14, 2003
This data release contains displacement and pore-water pressure data from a field experiment performed November 14, 2003, at Mount Kaba-san, Japan. This experiment generated a shallow landslide, induced by water infiltration from overhead sprinkling, that mobilized into a debris flow. More information about this experiment can be found in Ochiai and others (2004). Extensometer data...
Dissolved methane and CO2 concentrations and stable carbon isotopes from the coastal Arctic landscape of the Greiner Lake watershed, Nunavut, Canada in June 2022 and June-July 2023 Dissolved methane and CO2 concentrations and stable carbon isotopes from the coastal Arctic landscape of the Greiner Lake watershed, Nunavut, Canada in June 2022 and June-July 2023
A watershed in the coastal Canadian Arctic was sampled for dissolved carbon dioxide and methane concentration and stable carbon (carbon-13) isotopes to trace the transport, production, and consumption of carbon dioxide and methane during the spring thaw across a lake to bay transect. Two field campaigns were conducted in June 2022 and June-July 2023 out of the Canadian High Arctic...