WaterWatch

Explore maps, graphs, and tables describing real-time, recent, and past streamflow conditions for the United States. The real-time information generally is updated on an hourly basis.  The Waterwatch site

• shows the location of more than 3,000 long-term (30 years or more) U.S. Geological Survey stream gages,
• uses colors to represent streamflow conditions compared to historical streamflow,
• features a point-and-click interface allowing users to retrieve graphs of stream stage (water elevation) and flow, and
• highlights locations where extreme hydrologic events, such as floods and droughts, are occurring.

Maps show streamflow conditions for real-time, average daily, and seven-day average streamflow. The real-time streamflow maps highlight flood and high flow conditions. The seven-day average streamflow maps highlight below-normal and drought conditions. WaterWatch also provides hydrologic unit code (HUC) maps.