Data and Tools

Science Datasets

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.

Filter Total Items: 178
Eddy-covariance sensors at Lake Mohave, Nevada
October 22, 2015

Evaporation data from Lake Mead and Lake Mohave, Nevada and Arizona, March 2010 through April 2015

Evaporation rates were measured at Lake Mead and Lake Mohave, Nev. as part of a multi-phase evaporation study. This USGS data includes evaporation data from March 2010 through April 2015 for Lake Mead and from May 2013 through April 2015 for Lake Mohave.

USGS Online GW Quality Mapper Nat Map
January 17, 2015

Online mapper Provides Decadal Look at Groundwater Quality

An online mapper provides summaries of decadal-scale changes in groundwater quality across the Nation.​ The mapper shows how concentrations of 24 contaminants, such as nutrients, pesticides, metals, and volatile organic compounds, are changing over decadal periods in 67 groundwater networks.

USGS: Science for a changing world
January 17, 2014

Health-Based Screening Levels Database

The online Health-Based Screening Level database contains benchmarks for over 700 contaminants. Health-Based Screening Levels (HBSLs) are non-enforceable water-quality benchmarks that can be used supplement U.S. Environmental Protection Agency Maximum Contaminant Levels and Human Health Benchmarks for Pesticides.

Imperiled snail data map
December 17, 2013

American Fisheries Society List of Freshwater Gastropods (Snails) from Canada and the United States

At this website, one can view lists of native freshwater snails by state or province boundary, and plot distributions of snails by political boundaries. Lists can be downloaded for use in reports or analyses. Data file last updated 12/17/2013.

Imperiled fish data map
April 25, 2013

The 2008 AFS Endangered Species Committee list of imperiled freshwater and diadromous fishes of North America

At this website, one can view lists of imperiled fishes by freshwater ecoregion, by state or province boundary, and plot distributions of imperiled fishes by ecoregions or political boundaries. Data file last updated 4/25/2013.

Imperiled crayfish data map
March 17, 2011

The 2007 AFS Endangered Species Committee list of common and imperiled freshwater crayfishes of the United States and Canada

At this website, one can view lists of crayfishes by freshwater ecoregion, by state or province boundary, and plot distributions of crayfishes by ecoregions or political boundaries. Data file last updated 3/17/2011.

USGS: Science for a changing world
August 15, 2003

North Santiam River Temperature Model

USGS personnel constructed, calibrated, and tested a model of flow and water temperature in the North Santiam and Santiam Rivers, Oregon. These rivers are major tributaries to the Willamette River, and have been listed as impaired by the Oregon Department of Environmental Quality (ODEQ) due to water temperatures that exceed the Oregon State water-quality standard.

USGS: Science for a changing world
October 5, 2002

Willamette River and Long Tom River Dye Study

As part of the U.S. Geological Survey's support of the technical analyses and temperature model development for Willamette Basin streams, U.S. Geological Survey (USGS) personnel carried out four dye studies in Willamette Basin streams in 2002.

USGS: Science for a changing world
June 3, 2002

Willamette River Tributary Width Surveys

Measurements of the surface width of the Willamette River's largest tributaries were included in this project in order to provide an important check on the water-temperature models being constructed as the foundation for the Willamette temperature Total Maximum Daily Loads (TMDLs).