All the boat ramps are open. May and June can be a bit unsettled on the South Fork. Right now, they are drawing down the Palisades reservoir to catch the runoff, so the flow coming out of Palisades is just over 14000 cfs. The river is a bit off color but is fishable. Not much dry fly fishing, but you can do decent with nymphs and streamers. I like using Pat’s Rubberlegs size 6 in coffee and dropping a Roza Pink Hare’s Ear Jig in size 14 or just a standard size 14 half flash pheasant tail. Typically, the Salmon flies start around the first of July on a normal year. The Idaho Department of Fish and Game encourage the harvest of rainbow trout on all stretches of the South Fork. This is to protect the native Cutthroat trout. There is no limit on rainbows and some of the rainbows have monetary reward tags in the fish. If do harvest any rainbows cut the head off and deliver to the regional IDFG office in Idaho Falls and they will scan the head to see if a reward tag is in it. The max reward is $1000