Streamflow characteristics based on data through water year 2009 for selected streamflow-gaging stations in or near Montana: Chapter E in <i>Montana StreamStats</i>

Abstract

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83) Supplemental Information Water year is the 12-month period from October 1 through September 30 of the following calendar year. The water year is designated by the calendar year in which it ends. For example,

Montana StreamStats—A method for retrieving basin and streamflow characteristics in Montana: Chapter A in <i>Montana StreamStats</i>

“…Annual highflow frequency data, in conjunction with peak-flow frequency analyses, indicate how frequently large flows might occur and are used for flood planning and the design of highway bridges, culverts, dams, and levees on or near streams. The daily mean streamflow data from 408 gaging stations in or near Montana that have 10 or more years, or 10 or more seasons, of daily streamflow data were used to update statewide streamflow characteristics (McCarthy, 2016).…”

“…Streamflow characteristics developed from daily mean streamflows were computed and reported in Chapter E (McCarthy, 2016). Updated streamflow characteristics are presented for 408 gaging stations in Montana and adjacent areas with 10 or more years of daily mean streamflows or 10 or more seasons of daily mean streamflows through water year 2009.…”

“…Streamflow characteristics are available in StreamStats for the unregulated and regulated periods of record for sites with sufficient data. Additional description of the methods used and study results can be found in Chapter E (McCarthy, 2016), and the streamflow characteristics also are available in Stream-Stats (http://water.usgs.gov/osw/streamstats/; U.S. Geological Survey, 2015a).…”

Methods for estimating streamflow characteristics at ungaged sites in western Montana based on data through water year 2009: Chapter G in <i>Montana StreamStats</i>

“…The U.S. Geological Survey (USGS) has previously published reports that describe and document streamflow characteristics at streamflow-gaging stations (hereinafter referred to as "gaging stations") in Montana (Shields and White, 1981;Waltemeyer and Shields, 1982;Omang, 1984;McCarthy, 2005;McCarthy, 2016). Streamflow characteristics also are needed at ungaged locations in Montana.…”

Estimating current and future streamflow characteristics at ungaged sites, central and eastern Montana, with application to evaluating effects of climate change on fish populations

“…7). The mean monthly streamflow characteristics at streamflow-gaging stations that were selected for comparison were obtained from values published by McCarthy (2016). Uncertainty between streamflow characteristics predicted at fish sampling sites and streamflow characteristics calculated at streamflow-gaging stations is presented as the mean absolute percent error (Hanke and Reitsch, 1995).…”