Water Resources of the United States


National Water Information System

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

Today's Water Conditions

View comparisons of current and historical conditions using maps
Click map to go to current water resources conditions in the U.S.



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 Matching Funds

Cooperative Program Supports Relevant Science and Decision Making

USGS water science improves the quality of life of every American citizen by providing information to help assure that water is available and safe for drinking and recreation; is protective of ecosystems; and preserves our Nation’s economic viability related to energy, irrigation, industry, navigation, and other water demands.

Interpretative studies funded by the Cooperative Matching Funds Program- about 700 annually- cover a wide range of issues that are important to the USGS water mission and that inform local, State, and Tribal water decision-making, including,

  • flood inundation and regional flood and drought risks as related to climate and watershed factors;
  • environmental flows in streams for sustaining ecological health;
  • groundwater/surface water relations;
  • groundwater availability and recharge;
  • effects of urbanization, agriculture, and irrigation on the quantity and quality of water and ecosystems;
  • non-point source pollution, such as from farms, residential areas, and the atmosphere;
  • natural contaminants, such as arsenic and radon, in groundwater used for drinking;
  • emerging contaminants in drinking water and streams, such as pharmaceuticals, hormones, and endocrine disruptors;
  • energy development on quantity and quality of water resources; and,
  • water use

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Page Last Modified: Friday, 03-Jun-2016 13:44:50 EDT