Web Tools

The Science in Your Watershed website helps you find scientific information organized on a watershed basis. This information, coupled with observations and measurements made by the watershed groups, provides a powerful foundation for characterizing, assessing, analyzing, and maintaining the status and health of a watershed.

NEMI is a searchable database of environmental methods, protocols, statistical and analytical methods, and procedures that allows scientists and managers to find and compare methods for all stages of the monitoring process.

View the geographic distribution of Estimated Annual Agricultural Pesticide Use in the conterminous United States. A graph accompanies each map, which shows annual national use by major crop for the mapped pesticide for each year during the period.

This mapper provides results from the largest-ever assessment of water quality changes in the Nation's streams and rivers. More than 185 million water-quality records from over 600 Federal, State, Tribal, and local organizations were screened as part of this assessment.

Almost one-half of the U.S. population rely on groundwater for their water supply, and demand for groundwater for public supply, irrigation, and agriculture continues to increase. This mapper shows how concentrations of pesticides, nutrients, metals, and organic contaminants in groundwater are changing during decadal periods across the Nation.

The USGS GeoLog Locator is a web-based tool that allows allows users to access more than 7,000 digital borehole geophysical logs and related data files at over 1,700 locations.

The Geo Data Portal (GDP) provides access to numerous datasets, including gridded data for climate and land use. Datasets can be subsetted or summarized before download using several algorithms, and these algorithms can also be applied to other datasets hosted elsewhere.

Hurricane Maria made landfall in Puerto Rico on September 20, 2017, bringing with it a mix of high winds and extreme rainfall. This data visualization animates Hurricane Maria's Water Footprint, the cumulative precipitation the storm dropped on the island, and the impact of rainfall on river gage height.

Hurricane Irma, the most intense hurricane observed in the Atlantic in the last decade, approached the west coast of Florida on September 10th, 2017. This Hurricane Irma Water Footprint data visualization animates the hurricane's path, cumulative precipitation, and its impact on river gage height.

Hurricane Harvey approached the U.S. Gulf coast on August 25, 2017. The Hurricane Harvey Water Footprint data visualization shows the hurricane's impact on precipitation and streamflow.

Hurricane Matthew approached the southeastern U.S. coast on October 7, 2016. This is a data visualization that shows the hurricane's impact on precipitation and streamflow.

Microplastics, plastic particles less than 5 millimeters in diameter, are a contaminant of emerging concern in aquatic environments. This interactive visualization explores classifications and potential sources of microplastics in the Great Lakes.