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://streamstatsags.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. Information for user-selected ungaged sites currently cannot be obtained using beta version 4 for the States of Iowa, Indiana, North Carolina, and Oregon 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, which also provides access to limited beta version 4 documentation. See below for additional information about versions both 3 and 4.
Please contact the StreamStats by email at email@example.com if you have any questions.
StreamStats is implemented for the islands of Kauai, Oahu, Molokai, Maui, and Hawaii, State of Hawaii. The StreamStats for Hawaii application provides peak-flow statistics with annual exceedance probabilities of 50, 20, 10, 4, 2, 1, and 0.2 percent. These peak flows have recurrence intervals of 2-, 5-, 10-, 25-, 50-, 100-, and 500-year floods. The report below presents the equations used to estimate the flow statistics, documents the errors associated with the estimates, and describes the methods used to develop the equations and to measure the basin characteristics used in the equations. Users should familiarize themselves with this report before using StreamStats to obtain estimates of streamflow statistics for ungaged sites.
- Oki, D.S., Rosa, S.N., and Yeung, C.W., 2010, Flood-Frequency Estimates for Streams on Kaua‘i, O‘ahu, Moloka‘i, Maui, and Hawai‘i, State of Hawai‘i: U.S. Geological Survey Scientific Investigations Report 2010-5035, 121 p.
A Fact Sheet specific to the Hawaii StreamStats application is also available as a resource:
- Rosa, S.N. and Oki, D.S., 2010, Hawaii StreamStats: a web application for defining drainage-basin characteristics and estimating peak-streamflow statistics: U.S. Geological Survey Fact Sheet 2010-3052, 4 p.
The geospatial data sets used in the Hawaii StreamStats application are published and available for download. See the following report for more information:
- Rea, Alan, and Skinner, K.D., 2012, Geospatial datasets for watershed delineation and characterization used in the Hawaii StreamStats web application: U.S. Geological Survey Data Series 680, 12 p.
General information on the Interactive Map application, as well as specific sources and computation methods for basin characteristics are available here.
StreamStats for Hawaii was developed in cooperation with the State of Hawaii Department of Transportation.
Contact Us if you experience any problems with this application.