Streamflow statistics for unregulated and regulated conditions for selected locations on the Upper Yellowstone and Bighorn Rivers, Montana and Wyoming, 1928-2002

Scientific Investigations Report 2014-5115
Prepared in cooperation with the Yellowstone River Conservation District Council and the U.S. Army Corps of Engineers
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Abstract

Major floods in 1996 and 1997 intensified public debate about the effects of human activities on the Yellowstone River. In 1999, the Yellowstone River Conservation District Council was formed to address conservation issues on the river. The Yellowstone River Conservation District Council partnered with the U.S. Army Corps of Engineers to carry out a cumulative effects study on the main stem of the Yellowstone River. The cumulative effects study is intended to provide a basis for future management decisions within the watershed. Streamflow statistics, such as flow-frequency data calculated for unregulated and regulated streamflow conditions, are a necessary component of the cumulative effects study.


The U.S. Geological Survey, in cooperation with the Yellowstone River Conservation District Council and the U.S. Army Corps of Engineers, calculated low-flow frequency data and general monthly and annual statistics for unregulated and regulated streamflow conditions for the Upper Yellowstone and Bighorn Rivers for the 1928–2002 study period; these data are presented in this report. Unregulated streamflow represents flow conditions during the 1928–2002 study period if there had been no water-resources development in the Yellowstone River Basin. Regulated streamflow represents estimates of flow conditions during the 1928–2002 study period if the level of water-resources development existing in 2002 was in place during the entire study period.

Study Area

Additional publication details

Publication type Report
Publication Subtype USGS Numbered Series
Title Streamflow statistics for unregulated and regulated conditions for selected locations on the Upper Yellowstone and Bighorn Rivers, Montana and Wyoming, 1928-2002
Series title Scientific Investigations Report
Series number 2014-5115
DOI 10.3133/sir20145115
Year Published 2014
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) Wyoming-Montana Water Science Center
Description Report: xiii, 117 p.; Appendixes 2-1 and 2-2
Time Range Start 1928-01-01
Time Range End 2002-12-31
Country United States
State Montana;Wyoming
Other Geospatial Bighorn River;Upper Yellowstone River
Datum North American Datum of 1983
Projection Lambert Conformal Conic projection
Online Only (Y/N) Y
Additional Online Files (Y/N) Y