7071

• UCREFRP Catalog Number: 7071
• Author: Bosley, C.
• Title: Pre-Impoundment Study of the Flaming Gorge Reservoir.
• USFW Year: 1960.
• USFW - Doc Type: Cheyenne.
• Copyright Material: NO

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TABLE XIII
A Summary of Past Stacking, Green River
Number of Fish Planted 223,449
Number of miles of stream enclosed within the planting sites 87
Estimated surface acres of stream within the planting sites,
based on stream width of 150 to 180 feet 1,740
Average number of fish planted per year, per surface acre
of stream during the Iast twenty years 6.4
PLANTING POLICY
During the initial meeting between the Utah Fish and Game and the Wyoming
Game and Fish, a number of species were considered for the Flaming .Gorge Re-
servoir. It was decided that the initial stocking policy be restricted to
salmonid species, prefer ably rainbow and kokanee. Stocking rates of rainbow
were tentatively set as follows: Minimum - i3tah x,000,000; Wyoming 2,000,000
two-inch fish over a two-year period, and if one inch fish are used the numbers
will be doubled. Numbers of kokanee planted will be left to the discretion
of the individual states. Following the initial plants, channel catfish,
walleye pike, and largemouth bass would be considered. The following discussions
are confined to these species and the brown trout.
Rainbow Trout - (Salmo gairdnerii irideus)
In considering a rainbow trout stocking policy for the reservoir the
first year of impoundment, the following factors should be considered:
(1) A rough fish removal program if carried out will place predation and com~
petition for food and space at a minimum. Every advantage should be taken
of a situation like this, since it will never occur in the reservoir again.
(Z) Water temperatures rise rapidly in the Green River when the ice goes off.
Plankton populations should increase early in the reservoir because of this
temperature rise.
(3) Reservoir depth should be sufficient at the time the ice goes off in the
spring of 1963 to provide cool water areas during summer months.
(4) At least 6,000 surface acres, minimum pool level, is assured the first
year of impoundment, 1963. In all probability this acreage will be greater
by August. Therefore, stocking rate at a rate of 200 fish per surface acre,
based on 6,000 surface acre minimum pool level, should not be excessive.
Stocking at this rate would require 600,000 fish from both Wyoming and Utah
the first year of impoundment.
ICokanee Salmon - (Oncorhynchus nerka)
Experiments conducted with eyed and green kokanee salmon eggs gave results
similar to those obtained at the Salmon Cultural Station at Entiat, Washington.