https://wildlife.utah.gov/guidebooks..._guidebook.pdf
Daily limit changes at Flaming Gorge
Reservoir: Starting in 2021, the daily limit
for bass at Flaming Gorge Reservoir will be
three fish (largemouth and smallmouth
combined). The kokanee salmon limit is also
changing. You may keep a daily limit of up to
four trout and/or kokanee salmon (a combined
total), excluding lake trout. These changes
were made in coordination with Wyoming to
ensure consistency across the reservoir. See
page 30 for all of the rules specific to Flaming Gorge Reservoir-------------------
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this does not match Dduck post https://www.kokaneefishingforum.com/...ng-Regulations
looks like the limit in WY is still 3 kokanee

Flaming Gorge Reservoir in Sweetwater County, Wyoming

https://wgfd.wyo.gov/getmedia/fa8431...inal_for_Print
https://wgfd.wyo.gov/WGFD/media/cont...TS.pdf-Selling agents for AIS decal.

The creel limit on trout (excluding lake trout) shall be four (4) per day or in possession. No more than three (3) shall be kokanee salmon.
The creel limit on lake trout shall be eight (12) per day 24 in
possession. No more than one (1) lake trout shall exceed twenty eight
(28) inches.