River Levels - Graphs

A color-coded map indicates current river levels or flood stages for more than 6,500 streamgages in U.S. states and territories. Zoom to a region of interest and hover over any dot to generate a hydrograph of recently observed water levels at that site. Some sites also offer water level forecasts for the next several days.

Where do these data come from?

• How-To

  What can I do with these data?

  • Monitor real-time development of flooding following storms or springtime melting.
  • Compare current flow levels to peak levels during historic crests and record low-water events (listed on station pages).
  • Combine information from precipitation, temperature, and snow depth to identify relative contributions to flooding from precipitation versus snowmelt.

  How do I use the site?

  • Zoom to a region of interest. Check the color coding of streamgage sites to identify sites with above- or below-average discharge.
  • Hover your cursor over any streamgage site to view a graph of water levels for the past several days. Some stations also show forecast river levels several days into the future.
  • Click any streamgage of interest to access additional information about that site.
    • Explore the entire page to find dates and levels of historic crests and low-water events. Some pages also list specific local impacts associated with various flooding levels, and provide links to streamgages upstream or downstream from the site.
• Data Access
  Data Format(s)

  TXT (ASCII), PDF, PNG, XML

  Access Type	Link & Description
  Locator	Interactive Map of Streamgages Hover over or click dots on the map to access data and information about specific streamgages.

• Technical
  Data Type

  Land-based station

  Essential Climate Variables

  River discharge

  Resolution

  Horizontal resolution(s)

  • Point Resolution

  Temporal resolution(s)

  • Minute+

  Science Organization

  NOAA National Weather Service

  Data Steward

  NWS Internet Services Team

  Email

  w-nws.webmaster@noaa.gov