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Flood plain delineation for the Fremont River and Bull Creek, Hanksville, Utah

Scientific Investigations Report 2008-5233

Prepared in cooperation with US Army Corps of Engineers
By:
and

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Abstract

Predicted inundation maps for the Fremont River and Bull Creek in Hanksville, Utah, were developed using one-dimensional hydraulic models. Estimates of the 1-percent chance (100-year) peak streamflows were determined for the Fremont River and Bull Creek study reaches by using annual peak series data from streamflow-gaging stations and regional peak-flow regression equations. Surveyed topographic data for the study reaches were processed for use in the one-dimensional hydraulic models. The 1-percent chance (100-year) peak streamflows were simulated with hydraulic models to obtain predicted water-surface elevations. Water-surface elevations were then used to map the predicted inundation on a recent aerial photograph. The 1-percent chance (100-year) flood plain for the Fremont River in Hanksville, Utah, included some agricultural lands and did not encroach upon the town. The 1-percent chance (100-year) flood plain on the west side of Bull Creek was found to include a large portion of the town of Hanksville, Utah.

Study Area

Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Flood plain delineation for the Fremont River and Bull Creek, Hanksville, Utah
Series title:
Scientific Investigations Report
Series number:
2008-5233
Year Published:
2008
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Contributing office(s):
Utah Water Science Center
Description:
Report: vi, 28 p.; Map: 11 x 17 inches; Data Files
Country:
United States
State:
Utah
City:
Hanksville
Other Geospatial:
Bull Creek, Fremont River
Additional Online Files (Y/N):
Y