8188

• UCREFRP Catalog Number: 8188
• Author: Muth, R. T., et al.
• Title: Flow and Temperature Recommendations for Endangered Fishes in the Green River Downstream of Flaming Forge Dam.
• USFW Year: 2000.
• USFW - Doc Type: \
• Copyright Material: NO

Filial Report

3-28

September 2000

4.5
4.0
-
E 3.5
-
3:
0 3.0
ii:
~
C") 2.5
E
('I)
C\I
Q) 2.0
>
0
.c
<t 1.5
Q)
C)
ca 1.0
-
en
0.5
0.0
0

Greendale

200

400

600

800 1000 1200 1400 1600

Flow (m3/s)

Figure 3.13.-Relationships between stage and flow in the Green River at the USGS stream
gages near Greendale, Jensen, and Green River, Utah.

Yin et al. (1995) modeled changes in flow and stage that would result from several
operational regimes at Flaming Gorge Dam. Immediately downstream of Flaming Gorge Dam
(Greendale), maximum power-plant-capacity operations can result in daily flow changes of 107 m3/s
(varying from a minimum flow of 23 m3/s to a maximum flow of 130 m3/s within a 24-hour period).
This same operational regime produced a daily flow change of up to 80 m3/s (62 to 142 m3/s) at
Jensen. These flow changes produced daily stage changes of 1.5 m at Greendale and up to 0.6 mat
Jensen.

Table 3.10 summarizes modeled daily flow and stage changes at Greendale and Jensen
under operations complying with the 1992 Biological Opinion. During August and September
(nursery period), daily changes in flow of 57 m3/s (28 to 85 m3/s) at Greendale produced 10 m3/s (38
to 48 m3/s) changes at Jensen. These daily flow changes produced stage changes of 0.9 m at
Greendale and 0.1 m at Jensen.