Interactive Maps
Discover USGS science and data through mapping experience and refine search with filter options.
Groundwater Recharge in Pennsylvania
A map app to get recharge values from streamgage locations in Pennsylvania. Development of this app is described at the Related Science page.
Pacific Northwest SPARROW Mapper, 2002
The SPAtially Referenced Regressions On Watershed attributes (SPARROW) model was used to perform an assessment of surface‐water nutrient conditions and to identify important nutrient sources in watersheds of the Pacific Northwest region of the United States (U.S.) for the year 2002.
Flood Database for Colorado
An easy-to-use, Web-based geodatabase of historical flood and paleoflood information which includes links to sources of flood data. The interface makes this collection of information useful to water-resource managers to better understand the historic events for improved flood-frequency estimates of the largest floods in Colorado.
Identifying Changes in Background Water-Quality Conditions, Arkansas River and Fountain Creek, Colorado
Web based application to compare, on a real-time basis, estimated dissolved-solids concentration and load as a surrogate for water-quality conditions in the Arkansas River and Fountain Creek in Colorado and determine whether future water-quality conditions are significantly different from background conditions.
Arkansas Wateruse
In 1977, the Congress of the United States recognized the need for uniform, current, and reliable information on water use and directed the U.S. Geological Survey (USGS) to establish a National Water-Use Information Program (NWUIP) to complement the Survey's data on the availability and quality of the Nations water resources.