The U.S. Geological Survey (USGS) periodically publishes streamflow statistics, such as flood-frequency, flow-duration, and mean annual streamflow statistics, for gaged sites with long-term record. Regionalized regression methods recently have been developed for estimating many of these streamflow statistics at ungaged sites as a function of measured physical and climatic drainage basin characteristics.
The USGS Streamflow Statistics (StreamStats) Program was developed, in cooperation with ESRI, to make estimation of basin characteristics and streamflow statistics at ungaged sites easier, faster, and more consistent for the average user than previously employed manual techniques. Manual measurement of drainage basin characteristics is inconsistent, prone to error, and can take hours or days for large basins. Geographic Information System (GIS) techniques can produce drainage basin characteristics in seconds with greater accuracy and reproducibility.
The StreamStats user-interface is an Internet-based GIS application that allows users to easily obtain streamflow statistics, basin characteristics, and other information for user-selected USGS data-collection stations and ungaged sites of interest. To estimate streamflow statistics at ungaged sites, the StreamStats application relies on the data collected at USGS streamflow gages, on-the-fly measurements of physical and climatic drainage basin characteristics, and published regionalized regression equations. The StreamStats application interface allows the user to:
- delineate drainage basins for ungaged sites,
- download drainage basin outlines to a shapefile,
- compute selected basin characteristics for drainage basins,
- estimate selected streamflow statistics for a point on a stream,
- print map views, and
- retrieve information for USGS data-collection stations.
With the cooperation of the Oklahoma Department of Transportation, the implementation of StreamStats for Oklahoma is now available at http://water.usgs.gov/osw/streamstats/oklahoma.html. The foundation of the Oklahoma StreamStats application is a raster-based topographic model that integrates three publicly available national datasets – the USGS National Elevation Dataset (NED), the Natural Resources Conservation Service Watershed Boundary Dataset (WBD), and the USGS National Hydrography Dataset (NHD) – into a hydrologically correct, 1:24,000-scale topographic representation of the Oklahoma landscape which is displayed on a series of topographic base maps.
The Oklahoma StreamStats application covers most areas within the state of Oklahoma. Basin characteristics available for computation include contributing drainage area, contributing drainage area minus area regulated by floodwater retarding structures, mean annual precipitation at the basin outlet, and main-channel 10-85 stream slope. Streamflow statistics now available for computation include the peak flow at 2-, 5-, 10-, 25-, 50-, 100-, and 500-year recurrence intervals for rural, unregulated streams or rural streams that are regulated by NRCS FWR structures. Oklahoma StreamStats also provides estimates of monthly, seasonal, and annual flow-duration statistics and annual mean flow statistics for sites on ungaged streams in cooperation with the Oklahoma Water Resources Board.
Below are publications associated with this project.
Methods for estimating the magnitude and frequency of peak streamflows at ungaged sites in and near the Oklahoma Panhandle
Methods for estimating the magnitude and frequency of peak streamflows at ungaged sites in and near the Oklahoma Panhandle
Methods for estimating the magnitude and frequency of peak streamflows for unregulated streams in Oklahoma
StreamStats in Oklahoma– Drainage-basin characteristics and peak-flow frequency statistics for ungaged streams
Methods for estimating flow-duration and annual mean-flow statistics for ungaged streams in Oklahoma
Below are partners associated with this project.
- Overview
The U.S. Geological Survey (USGS) periodically publishes streamflow statistics, such as flood-frequency, flow-duration, and mean annual streamflow statistics, for gaged sites with long-term record. Regionalized regression methods recently have been developed for estimating many of these streamflow statistics at ungaged sites as a function of measured physical and climatic drainage basin characteristics.
The USGS Streamflow Statistics (StreamStats) Program was developed, in cooperation with ESRI, to make estimation of basin characteristics and streamflow statistics at ungaged sites easier, faster, and more consistent for the average user than previously employed manual techniques. Manual measurement of drainage basin characteristics is inconsistent, prone to error, and can take hours or days for large basins. Geographic Information System (GIS) techniques can produce drainage basin characteristics in seconds with greater accuracy and reproducibility.
The StreamStats user-interface is an Internet-based GIS application that allows users to easily obtain streamflow statistics, basin characteristics, and other information for user-selected USGS data-collection stations and ungaged sites of interest. To estimate streamflow statistics at ungaged sites, the StreamStats application relies on the data collected at USGS streamflow gages, on-the-fly measurements of physical and climatic drainage basin characteristics, and published regionalized regression equations. The StreamStats application interface allows the user to:
- delineate drainage basins for ungaged sites,
- download drainage basin outlines to a shapefile,
- compute selected basin characteristics for drainage basins,
- estimate selected streamflow statistics for a point on a stream,
- print map views, and
- retrieve information for USGS data-collection stations.
With the cooperation of the Oklahoma Department of Transportation, the implementation of StreamStats for Oklahoma is now available at http://water.usgs.gov/osw/streamstats/oklahoma.html. The foundation of the Oklahoma StreamStats application is a raster-based topographic model that integrates three publicly available national datasets – the USGS National Elevation Dataset (NED), the Natural Resources Conservation Service Watershed Boundary Dataset (WBD), and the USGS National Hydrography Dataset (NHD) – into a hydrologically correct, 1:24,000-scale topographic representation of the Oklahoma landscape which is displayed on a series of topographic base maps.
The Oklahoma StreamStats application covers most areas within the state of Oklahoma. Basin characteristics available for computation include contributing drainage area, contributing drainage area minus area regulated by floodwater retarding structures, mean annual precipitation at the basin outlet, and main-channel 10-85 stream slope. Streamflow statistics now available for computation include the peak flow at 2-, 5-, 10-, 25-, 50-, 100-, and 500-year recurrence intervals for rural, unregulated streams or rural streams that are regulated by NRCS FWR structures. Oklahoma StreamStats also provides estimates of monthly, seasonal, and annual flow-duration statistics and annual mean flow statistics for sites on ungaged streams in cooperation with the Oklahoma Water Resources Board.
- Publications
Below are publications associated with this project.
Methods for estimating the magnitude and frequency of peak streamflows at ungaged sites in and near the Oklahoma Panhandle
This report presents the results of a cooperative study by the U.S. Geological Survey and the Oklahoma Department of Transportation to estimate the magnitude and frequency of peak streamflows from regional regression equations for ungaged stream sites in and near the Oklahoma Panhandle. These methods relate basin characteristics (physiographic and climatic attributes) to selected peak streamflow fAuthorsS. Jerrod Smith, Jason M. Lewis, Grant M. GravesMethods for estimating the magnitude and frequency of peak streamflows at ungaged sites in and near the Oklahoma Panhandle
This report presents the results of a cooperative study by the U.S. Geological Survey and the Oklahoma Department of Transportation to estimate the magnitude and frequency of peak streamflows from regional regression equations for ungaged stream sites in and near the Oklahoma Panhandle. These methods relate basin characteristics (physiographic and climatic attributes) to selected peak streamflow fAuthorsS. Jerrod Smith, Jason M. Lewis, Grant M. GravesMethods for estimating the magnitude and frequency of peak streamflows for unregulated streams in Oklahoma
Peak-streamflow regression equations were determined for estimating flows with exceedance probabilities from 50 to 0.2 percent for the state of Oklahoma. These regression equations incorporate basin characteristics to estimate peak-streamflow magnitude and frequency throughout the state by use of a generalized least squares regression analysis. The most statistically significant independent variabAuthorsJason M. LewisStreamStats in Oklahoma– Drainage-basin characteristics and peak-flow frequency statistics for ungaged streams
The USGS Streamflow Statistics (StreamStats) Program was created to make geographic information systems-based estimation of streamflow statistics easier, faster, and more consistent than previously used manual techniques. The StreamStats user interface is a map-based internet application that allows users to easily obtain streamflow statistics, basin characteristics, and other information for userAuthorsS. Jerrod Smith, Rachel A. EsralewMethods for estimating flow-duration and annual mean-flow statistics for ungaged streams in Oklahoma
Flow statistics can be used to provide decision makers with surface-water information needed for activities such as water-supply permitting, flow regulation, and other water rights issues. Flow statistics could be needed at any location along a stream. Most often, streamflow statistics are needed at ungaged sites, where no flow data are available to compute the statistics. Methods are presented inAuthorsRachel A. Esralew, S. Jerrod Smith - Partners
Below are partners associated with this project.