Fair to good on the South Fork. Trout limit 6. May. Check the proclamation. This stream offers an incredible number of large browns per mile. Usually best fishing nymphs along the bottom.
Regulations are complicated.
See the proclamation for details. From Baker Reservoir downstream to the confluence with the Virgin River the trout limit is 4. Good float tubing in the reservoir. Very good fly fishing in most tributaries. Lots of wild cutthroats, including some larger fish.