Water Resources of the United States


National Water Information System (NWIS)

View current and historical streamflow, groundwater level, and water-quality data

Data Discovery

For more data options, explore our data discovery tools.

Today's Water Conditions

View maps of current and historical conditions

Click map to go to current water resources conditions in the U.S.

Subscribe to hydrologic alerts:




USGS Water Science Centers are located in each state

USGS In Your State (clickable)There is a USGS Water Science Center office in each State.
Washington Oregon California Idaho Nevada Montana Wyoming Utah Colorado Arizona New Mexico North Dakota South Dakota Nebraska Kansas Oklahoma Texas Minnesota Iowa Missouri Arkansas Louisiana Wisconsin Illinois Mississippi Michigan Indiana Ohio Kentucky Tennessee Alabama Pennsylvania West Virginia Georgia Florida Caribbean Alaska Hawaii New York Vermont New Hampshire Maine Massachusettes South Carolina North Carolina Rhode Island Virginia Connecticut New Jersey Maryland-Delaware-D.C.

Cooperative Water Program

Products > Ecosystem Health


Recently Added Products in Ecosystem Health


thumbnail new Aquatic Science Documents Substantial Improvements in Lakes Mead and Mohave, Nevada –USGS, in cooperation and partnership with the National Park Service, U.S. Fish and Wildlife Service, Bureau of Reclamation, Nevada Department of Wildlife, Southern Nevada Water Authority, BIO-WEST, University of Nevada, Reno, and University of Nevada, Las Vegas, document substantial improvements in Lakes Mead and Mohave, which are centerpieces of Lake Mead National Recreation Area.  (Press release; USGS Circular)


thumbnail new Water Quality Affects Aquatic Health in Urban Streams in Kansas City and Independence, Missouri –USGS, in cooperation with the City of Independence, Missouri Water Pollution Control Department, used macroinvertebrate populations as an indicator of stream health in downstream areas of the Blue River and Little Blue River basins, which are both affected by urban development. Differences were noted in aquatic-life status because of effects of stormwater, wastewater discharges, and upstream reservoirs. (Technical announcement; Report)

USGS Home Water Climate Change Science Systems Ecosystems Energy, Minerals, & Env. Health Hazards USGS Intranet

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://water.usgs.gov/coop/products/ecosystems/
Page Contact Information: Water Webserver Team
Page Last Modified: Tuesday, 04-Mar-2014 10:30:42 EST