7415

• UCREFRP Catalog Number: 7415
• Author: U.S. Fish and Wildlife Service.
• Title: Flaming Gorge Peaking Power Study-Preliminary Draft.
• USFW Year: 1988.
• USFW - Doc Type: Denver, Colorado.
• Copyright Material: NO

Based upon these measurements, the
and Ouray Refuge were extended, and
was prepared for Tia Juana Bottom.
the ratings tables for the three si
1-3 and Figures 3-5, and the rating
the sites is displayed below.
Mitten Park
X=y-83.6096095/.00086404
Ouray Refuge
X=Y-1.353397/.583378
Tia Juana Bottom
X=Y-41.92915640/0003372
Where X= Flow and Y= Stage
V. SSARR MODEL CALIBRATION
Flaming Gorge to Jensen
rating tables at Mitten Park
a preliminary rating table
The stage vs flow graphs and
tes are displayed in Tables
table equation for each of
In the late 1970's, a proposal by the Bureau to increase the.
peaking capability of Flaming Gorge powerplant was investigated
as a means to generate greater power revenues. Although the plan
was ultimately dropped, the proposed increasein discharge
fluctuations led to the calibration of the SSARR river routing
computer model, which could predict the downstream effect of any
hourly release from the dam.
In 1978, Reclamation installed recording stream gages at Little
Hole, Browns Park, and at the Gates of Lodore. These were used
in conjunction with the Greendale gage, a permanent USGS gage
site just downstream of the dam. The dam releases were recorded
for a 2 week period of fluctuating flow using Stevens A-35
recorders. Cross sections were surveyed and rating tables were
developed for each of the sites. The strip charts were then
converted to flow hydrographs.
An examination of the hydrographs indicated very little
attenuation in the reach from the dam down to Browns Park. Much
of this channel is canyon terrain and confined. Therefore, the
calibrated model only shifted the dam release in time. The
Browns Park area, however, has a flattened gradient and a wider
channel cross section with a greater degree of meandering.
6