This map displays the most recent summary streamflow values within the state of Washington from gages maintained by the Washington State Department of Ecology and the United States Geological Survey (USGS). The streamflow symbols reflect the magnitude of the most recent estimated flows relative to historic flows that occurred in past years on the current date at that particular stream gaging station. Generally, streamflows greater than the 75th percentile are considered above normal.  Flows between the 25th and 75th percentiles are considered normal, and flow less than the 25th percentile are considered low.Differences exist in Ecology’s and USGS’ presentation of their respective flow information.  The flow data displayed for the Ecology gaging stations are calculated overnight from statistics measured from the previous day’s flow so that all streamflow data displayed for the Ecology gaging stations are relative to the previous day’s flow.USGS reports flow in near real-time meaning the reported flow estimates are updated several times a day and are no more than 6 hours old. The flow data displayed for the USGS gaging stations reflects the near real-time flows relative to the historic record of flows on the current date.For more information on the Department of Ecology River and Stream Flow Monitoring program, visit http://www.ecy.wa.gov/programs/eap/flow/index.html.For more information on the USGS Water Watch  program, visit http://waterwatch.usgs.gov/.Questions or concerns about the map and data displayed should be directed to [email protected] data displayed are provisional and subject to significant change.