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Since 1993, the CO Water Science Center has been collecting a composite sample of the chemistry of most of the annual precipitation at high elevations [> 1,800 meters], in an effort to determine annual concentrations and depositional amounts of selected nutrients and other constituents in snow. This data is provided here via an interactive map with available data and charts by site.

The CRMS network includes 391 sites with standardized data collection techniques and fixed sampling schedules. Monitoring data including hydrologic, accretion, herbaceous marsh vegetation, forested swamp vegetation, soil properties, surface elevation, and land/water composition are available for download from the CRMS website.

The Colorado River Basin Actionable and Strategic Integrated Science and Technology Team has created an interactive map of USGS projects to highlight the integrated science currently conducted within the Colorado River Basin. These projects are not all inclusive of the work conducted by the USGS within the CRB, but highlight the broad range of integrated science currently conducted.

This collection contains estuarine shorelines and rates of change for Barnegat and Great Bay, New Jersey.

This collection contains estuarine shorelines and rates of change for Breton Island, Louisiana.

This collection contains estuarine shorelines and rates of change for Grand Bay, Mississippi/Alabama (1848-2017).

USGS Library Guides are developed and maintained by professional librarians to connect users to relevant resources and research strategies. Content is updated regularly to ensure accuracy and relevancy.

Discover USGS Library print and digital books, journals, maps, and other materials in our collection. Browse millions of scholarly citations and abstracts from the online catalog.

Search an archive of more than 500,000 still photographs, slides, glass plate slides, lantern slides, negatives, and sketches dating from the 1870s and taken by USGS scientists as part of their field studies.

Search the authoritative catalog for USGS peer reviewed scientific publications including USGS publication series, journal articles, books, book chapters, other government and nongovernment publications, cooperator publications, and conference proceedings.

Radon, a colorless and odorless gas, is commonly found in groundwater in Pennsylvania. This web tool allows interactive display of Pennsylvania Water Science Center measurements of radon in groundwater samples from wells. All data presented here is publicly available and a data download tool is provided that will output all currently-displayed data.

Landsat 4 was launched on July 16, 1982, with joint control of the program by NOAA, NASA, and the U.S. Geological Survey. Each federal agency took on a different role.