Skip to main content
U.S. flag

An official website of the United States government

Interactive Maps

Discover USGS science and data through mapping experience and refine search with filter options.

Filter Total Items: 546

Hydrogeology of the Adelaida Area, San Luis Obispo County, CA

The USGS is conducting a comprehensive evaluation of groundwater resources of the Adelaida area. Use this map to explore the hydrogeology of the area, including land use, geology, and USGS hydrologic data by watershed or water management district. 

TrendPowerTool: A web lookup tool for estimating the statistical power of a monitoring program to detect population trends

A simulation-based power analysis can be used to estimate the sample sizes needed for a successful monitoring program, but requires technical expertise and sometimes extensive computing resources. We developed a web-based lookup app, called TrendPowerTool.

Arctic Research and Policy Act Boundary Map: Circumpolar

All US and Foreign territory north of the Arctic Circle and all US terrritory north and west of the boundary formed by the Porcupine, Yukon, and Kuskokwim Rivers; all contiguous seas including the Arctic Ocean and the Beaufort, Bering and Chukchi Seas, and the Aleutian chain.

Arctic Research and Policy Act Boundary Map: Bering Sea

All US and Foreign territory north of the Arctic Circle and all US terrritory north and west of the boundary formed by the Porcupine, Yukon, and Kuskokwim Rivers; all contiguous seas including the Arctic Ocean and the Beaufort, Bering and Chukchi Seas, and the Aleutian chain.

Arctic Research and Policy Act Boundary Map: Alaska Terrestrial

Region: Alaska.  All US and Foreign territory north of the Arctic Circle and all US terrritory north and west of the boundary formed by the Porcupine, Yukon, and Kuskokwim Rivers; all contiguous seas including the Arctic Ocean and the Beaufort, Bering and Chukchi Seas, and the Aleutian chain.

LCMAP CONUS Mosaic Download Portal

A web based application used for searching and downloading LCMAP science products at the Conterminous United States (CONUS) scale. 

Model archive for analysis of long-term annual yields of highway and urban runoff in selected areas of California with the Stochastic Empirical Loading and Dilution Model (SELDM)

This model archive describes approaches used by the U.S. Geological Survey in cooperation with CalTrans for assessing long-term annual yields of highway and urban runoff in selected areas of California with version 1.1.0 of the Stochastic Empirical Loading and Dilution Model (SELDM). 

Storm Summary Timelapse Dashboard (SSTL)

Many USGS water-resource monitoring sites have webcams installed to allow remote visibility of current water and environmental conditions, identify technical issues, verify remote measurements, and gather data for visual analyses. The Storm Summary Timelapse Dashboard (SSTL) displays many of these active webcams and provides access to still-frame images and timelapse videos of recent conditions.

New Jersey Flood Inundation Mapper

The USGS Flood Inundation Mapping Program (FIM) partners with local communities and other government agencies to develop and validate flood inundation map libraries. Click the title above to visit the USGS FIM website and learn more about available tools. Completed projects are collected on the USGS National Flood Inundation Mapper, brought to you by the USGS Wisconsin Internet Mapping Group

How Wildfires Threaten U.S. Water Supplies

The 2020 fire season provided stark evidence that wildfires are changing the landscape of America. But when a forest burns, the impacts on water supply and quality last long after the flames go out. Learn more about how wildfires threaten U.S. water supplies – and what we can do to adapt to the complex impacts of hotter and bigger fires.

Pennsylvania Groundwater Quality Monitoring Network

USGS Pennsylvania Water Science Center, in cooperation with the Pennsylvania Department of Environmental Protection, samples 28 wells biannually to monitor ambient groundwater quality conditions in a variety of settings throughout Pennsylvania. The most recent results for selected constituents can be accessed through the Groundwater Quality Monitoring Network Web Tool, which includes an interactive map with user selectable results.

Pennsylvania StreamStats

StreamStats is a national web-based application that provides selected water-resource information for Pennsylvania. Users can easily obtain descriptive information, basin characteristics, and streamflow statistics for USGS streamgages and ungaged stream locations throughout the Commonwealth. Water use data is also available for Pennsylvania in StreamStats.