Beta version 4 has arrived!
Beta version 4 is now available for most states on a trial basis, and version 3 remains available. Beta version 4 provides a single user interface (at http://ssdev.cr.usgs.gov/streamstats/) for all states that are implemented, rather than separate applications for each state, as in versions 2 and 3, and the user interface is more user friendly than previous versions. Limited beta version 4 documentation can be accessed by clicking on the Help button in the user interface. Also, information for user-selected ungaged sites currently cannot be obtained for the Arkansas, Arizona, Georgia, Iowa, Indiana, North Carolina, Oregon, South Carolina, Tennessee, and Washington because of unique functionality for those states that is not yet implemented. Users are encouraged to provide comments and report bugs by use of the Help button on the interface. See the StreamStats home page for a description of the differences in capabilities between version 3 and beta version 4.
Please help us conserve our server system resources by closing the Interactive Map window when you are finished using it. Doing to will help ensure system availablility for all users. Thank you. Please contact the StreamStats by email at firstname.lastname@example.org if you have any questions.
Minnesota StreamStats incorporates regression equations for estimating instantaneous peak flows with annual exceedance probabilities of 66.7, 50, 20, 10, 4, 2, 1, and 0.002 percent. These peak flows have recurrence intervals of 1.5, 2, 5, 10, 25, 50, 100, and 500 years, respectively. The report below documents the regression equations available in StreamStats for Minnesota, the methods used to develop the equations and to measure the basin characteristics used in the equations, and the errors associated with the estimates obtained from the equations. This report describes the development of a region-of-influence method for estimating peak flows as well as the development of regression equations. StreamStats has not implemented the region-of-influence method. Users should familiarize themselves with the report before using StreamStats to obtain estimates of peak flows for ungaged sites.
- Lorenz, D.L., Sanocki, C.A., and Kocian, M.J., 2009, Techniques for estimating the magnitude and frequency of peak flows on Small Streams in Minnesota based on data through water year 2005: U.S. Geological Survey Scientific Investigations Report 2009–5250, 54 p.
General information on the Interactive Map application, as well as specific sources and computation methods for basin characteristics are available here.
Contact Us if you experience any problems with this application.