9700

• UCREFRP Catalog Number: 9700
• Author: Hayes, J.W., K.E. LaGory and G.L. Burton.
• Title: Consideration of site-specific floodplain inundation thresholds in implementing peak flow magnitude and duration recommendations in the middle Green River, Utah.
• USFW Year: 2005.
• USFW - Doc Type: Argonne National Labortory, Argonne, Illinois.
• Copyright Material: NO

Green River Floodplain Inundation

4

June 2005

Reach 3. Peak flow magnitudes recommended for Reach 3 range from ~235 m3/s (8,300 cfs) in
dry years to ~1,104 m3/s (39,000 cfs) in wet years. Flows in Reach 3 will be largely dependent
on Reach 2 targets and runoff in intervening tributaries such as the Duchesne, White, Price, and
San Rafael Rivers.

In Reach 1 (3) of the Green River, the magnitude, duration, and timing of the peak flows
recommended by Muth et al. (2000) in dry to moderately wet years was primarily intended to
help achieve the peak flows recommended for Reaches 2 and 3. In wet years, instantaneous peak
flows of at least 244 m3/s (8,600 cfs) were recommended to help restore, rebuild, and maintain
habitats that could be used by adult Colorado pikeminnow in Lodore Canyon.

(3) Reach I is defined as the Green River from Flaming Gorge Dam to the confluence with the Yampa River.