Data
Browse real-time data, data releases and more.
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Chemicals of Emerging Concern in Water and Bottom Sediment in Great Lakes Areas of Concern, 2013 - Analytical Methods, Collection Methods, Environmental Data, and Quality Assurance
Mohawk River Basin Water Quality Sampling Sites
Mohawk River Basin Water Quality Sampling Sites
Spatial distribution of Rhodamine WT dye concentration measured in the Des Plaines River and the Chicago Sanitary and Ship Canal, Chicago, IL in November 2011
2016 One-Year Seismic Hazard Forecast for the Central and Eastern United States from Induced and Natural Earthquakes
Water Quality and Hydrologic Data (2011-13) for Freshwater Science Paper titled, "Patterns of Diel Variation in Nitrate Concentrations in the Potomac River"
Water Data Mapper
The National Water Information System (NWIS) provides map-interface access to data at over 1.5 million water-monitoring sites.
Water Quality
Table-based interface allow you to get the latest water-quality data for thousands of water monitoring sites in the Nation.
Groundwater
Table-based interface allow you to get the latest groundwater levels data for thousands of water monitoring sites in the Nation.
Surface water
Table-based interface allow you to get the latest streamflow and other surface-water data for thousands of water monitoring sites in the Nation.
Flood Watch
Where in the Nation are floods or very high flows occurring now? How can I see these sites on a map and get to the data?
Surface Water Watch
WaterWatch displays maps, graphs, and tables describing real-time, recent, and past streamflow conditions for the United States.
Subscribe to Volcano Notification Services
The Volcano Notification Service (VNS) is a free service that sends you notification emails about volcanic activity happening at U.S. monitored volcanoes. You can customize the VNS to deliver notifications for certain volcanoes or a range of volcanoes, and you can also choose the notification types you want to receive. Notifications are issued by the five U.S. Volcano Observatories.