If you’re willing to face the cold and wind on the river this holiday week and plan on fishing the Green River UT watch for fluctuating water levels. Release flows from Flaming Gorge Dam will have the fish discombobulated so your best bet is going to be during stabilization periods.
For dry fly fishing use a BWO or small midge in back eddies. Nymph fishing should be a safe bet overall- try midges, eggs, or pheasant tail. Streamer fishing should produce early or late in the day when the water flows are typically changing. Bundle up, stay safe, and MerryChristmas!