StreamStats Delineations - Where are they?
Your Direct Link to StreamStats
Raindrop Trace
PRObability of Streamflow PERmanence (PROSPER)
Regulation
Upstream Network Trace
StreamStats
StreamStats provides access to spatial analytical tools that are useful for water-resources planning and management, and for engineering and design purposes. The map-based user interface can be used to delineate drainage areas, get basin characteristics and estimates of flow statistics, and more. Available information varies from state to state.
SUBJECT: Unplanned outage impacting public web applications including StreamStats
START TIME: Wednesday April 23, 2025, 4:00pm CT
EXPECTED DURATION: Unknown
DETAILS: USGS is currently investigating an unplanned outage impacting several USGS data delivery applications. There are currently no known workarounds. We apologize for this interruption in service and hope to have the issue resolved as quickly as possible.
What you need to do: Watch for further notices on https://www.usgs.gov/streamstats, and we welcome emails to the StreamStats team (streamstats@usgs.gov) to tell us how this outage has impacted you and your work.
Time of Travel Beta Application
The Time of Travel Beta Application provides rapid estimates of instream travel times for emergency spill response scenarios.
New Publication Released!
StreamStats—A quarter century of delivering web-based geospatial and hydrologic information to the public, and lessons learned
StreamStats Application
StreamStats is a Web application that provides access to an assortment of Geographic Information Systems (GIS) analytical tools that are useful for water-resources planning and management, and for engineering and design purposes. The map-based user interface can be used to delineate drainage areas for user-selected sites on streams, and then get basin characteristics and estimates of flow statistics for the selected sites anywhere this functionality is available. StreamStats users also can select the locations of U.S. Geological Survey data-collection stations, shown as triangles on the StreamStats map, and get flow statistics and other information for the stations. The types of flow statistics that are available vary from state to state. A variety of additional tools are available for discovering information about streams and the activities along them.
StreamStats works within Web browser software on personal computers and mobile devices, and is best viewed using the latest versions of Internet Explorer, Microsoft Edge, Chrome, or Firefox. The browser must allow HTML5 asynchronous script execution. The application is being continually improved and expanded. The News link in our left-hand menu will provide notices of any new enhancements.
NOTICE: Computational and sequencing issues have been identified in the PeakFQ software and Bulletin 17C guidelines (B17C) that may result in erroneous flood-frequency estimates under certain circumstances. The USGS, in collaboration with the U.S. Army Corp of Engineers (USACE), is evaluating these issues and considering updated methods which can be implemented in PeakFQ and USACE HEC-SSP software. Additionally, refined user guidelines may be released with the updated PeakFQ software to help users avoid the circumstances that give rise to computational errors and mitigate their impact.
For detailed information, please visit this page.