Implementation and Evaluation of the Streamflow Statistics (StreamStats) Web Application for Computing Basin Characteristics and Flood Peaks in Illinois PDF Download
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Author: Audrey L. Ishii Publisher: ISBN: Category : Flood forecasting Languages : en Pages : 39
Book Description
Illinois StreamStats (ILSS) is a Web-based application for computing selected basin characteristics and flood-peak quantiles based on the most recently (2010) published (Soong et al., 2004) regional flood-frequency equations at any rural stream location in Illinois. ILSS can be accessed on the Web at http://streamstats.usgs.gov/ by selecting the State Applications hyperlink and choosing Illinois from the pull-down menu.
Author: Audrey L. Ishii Publisher: ISBN: Category : Flood forecasting Languages : en Pages : 39
Book Description
Illinois StreamStats (ILSS) is a Web-based application for computing selected basin characteristics and flood-peak quantiles based on the most recently (2010) published (Soong et al., 2004) regional flood-frequency equations at any rural stream location in Illinois. ILSS can be accessed on the Web at http://streamstats.usgs.gov/ by selecting the State Applications hyperlink and choosing Illinois from the pull-down menu.
Author: Publisher: ISBN: Category : Stream measurements Languages : en Pages : 4
Book Description
A web application (computer online service and data) named STREAMSTATS (available at http://ma.water.usgs.gov/streamstats/) was developed jointly with MassGIS and other agencies.
Author: G. F. Koltun Publisher: ISBN: Category : Stream measurements Languages : en Pages : 0
Book Description
A StreamStats Web application was developed for Ohio that implements equations for estimating a variety of streamflow statistics including the 2-, 5-, 10-, 25-, 50-, 100-, and 500-year peak streamflows, mean annual streamflow, mean monthly streamflows, harmonic mean streamflow, and 25th-, 50th-, and 75th-percentile streamflows. StreamStats is a Web-based geographic information system application designed to facilitate the estimation of streamflow statistics at ungaged locations on streams. StreamStats can also serve precomputed streamflow statistics determined from streamflow-gaging station data. The basic structure, use, and limitations of StreamStats are described in this report. To facilitate the level of automation required for the StreamStats application, the technique used by Koltun (2003) for computing main-channel slope was replaced with a new computationally robust technique. The new channel slope characteristic, referred to as SL10-85, differed from the National Hydrography Data based channel slope values (SL) reported by Koltun (2003) by an average of -28.3 percent, with the median change being -13.2 percent. In spite of the differences, the two slope measures are strongly correlated. The change in channel slope values necessitated revision of the full-model equations for flood-peak discharges presented by Koltun (2003). Average standard errors of prediction for the revised full-model equations presented in this report increased by a small amount over those reported by Koltun (2003), with increases ranging from 0.7 to 0.9 percent. Mean percentage changes in the revised regression and weighted flood-frequency estimates relative to regression and weighted estimates reported by Koltun (2003) were small, ranging from -0.72 to -0.25 percent and -0.22 to 0.07 percent, respectively.
Author: Audrey L. Ishii
Author: Audrey L. Ishii
Author: Illinois. Office of Secretary of State
Author: 
Author: 
Author: G. F. Koltun
Author: M. A. Benson
Author: John R. Williams
Author: Kernell G. Ries
Author: Marla H. Stuckey
Author: Rolland William Carter