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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MODFLOW-NWT Upgrade and Preliminary-Assessment of a Groundwater-Flow Model of the Seacoast Bedrock Aquifer, New Hampshire MODFLOW-NWT Upgrade and Preliminary-Assessment of a Groundwater-Flow Model of the Seacoast Bedrock Aquifer, New Hampshire
Improvements to an existing regional groundwater-flow model of a 160-square mile area of coastal New Hampshire (https://doi.org/10.3133/sir20085222), incorporating MODFLOW-NWT and by more accurately representing stream characteristics, were presented at the MODFLOW and More 2017 conference in an example simulating approximate changes in water use. The groundwater-flow model developed for...
Digital elevation model of the lava dome in the crater of Mount St. Helens, November 12, 1986 Digital elevation model of the lava dome in the crater of Mount St. Helens, November 12, 1986
The catastrophic, explosive eruption of Mount St. Helens, Washington, on May 18, 1980, is the most well-known eruption of the volcano. Less well known is the May 18th eruption marked the beginning of a period of eruptive activity that lasted through 1986. From October 1980 through October 1986, a series of 17 dome-building episodes added millions of cubic meters of lava to the crater...
Flow, turbulence, and bathymetric measurements of the Missouri River at Searcys Bend, near Huntsdale, Missouri September 16, 2021 Flow, turbulence, and bathymetric measurements of the Missouri River at Searcys Bend, near Huntsdale, Missouri September 16, 2021
This dataset includes measurements of flow, turbulence, and bathymetry generated from multibeam bathymetry for a short reach of the Missouri River at Searcys Bend (SB) near Huntsdale, Missouri. Flow and turbulence were characterized using a Signature 1000 mounted on an anchored moving boat and an Aquadopp mounted on a tripod near the bed. Repeat bathymetric measurements were made in...
Crayfish morphometric measurements, burrow attributes and occupancy in response to physical burrow barriers Crayfish morphometric measurements, burrow attributes and occupancy in response to physical burrow barriers
Data were collected in association with the application of two physical barrier treatments, bentonite clay (a sealing agent) and expanding foam (an insulation sealant), in natural pond-burrows to suppress or kill the invasive red swamp crayfish (Procambarus clarkii). Data include burrow diameter and depth, crayfish sex and size, and determination of the treatment reaching the burrow...
Data on the acute and chronic toxicity of sodium chloride and sodium sulfate to freshwater organisms in a low hardness water representing Louisiana water conditions Data on the acute and chronic toxicity of sodium chloride and sodium sulfate to freshwater organisms in a low hardness water representing Louisiana water conditions
We determined acute and chronic toxicity of sodium chloride (NaCl) and sodium sulfate (Na2SO4) to up to 7 freshwater species of different taxa in a hardness water of 40 mg/L as CaCO3 and evaluated the effect of 4 hardness waters (15, 30, 60, and 120 mg/L as CaCO3) on acute toxicity of NaCl and Na2SO4 to 3 sensitive species tested in the acute exposures. This data release reports results...
Chronic Wasting Disease Surveillance Optimization Software Version 2 Chronic Wasting Disease Surveillance Optimization Software Version 2
The Chronic Wasting Disease Surveillance Optimization Software Version 2 computes sampling recommendations to detect chronic wasting disease (CWD) in white-tailed deer (Odocoileus virginianus). Driven by a combinatorial optimization algorithm, the software maximizes the return-on-investment to the wildlife agency while keeping the overall surveillance program within budget. The software...