South Fork, June 22, 2024
The South Fork will now come alive for fly fishers! Flow at Irwin was about 20000 cfs on June 3rd but it has been reduced stepwise to about 13000 cfs (14000 cfs, 7200 cfs at Lorenzo) which is normal for the date. Any day now the giant stonefly hatch will work its way up the river. The South Fork big stonefly hatch is not as consistent as the on the Henry’s Fork or the Madison River. It tends to skip some locations up and down the river. This makes boating to find it almost a must. Expect thick caddis emergences almost anywhere on the river. Let the water warm some more before big mayfly hatches begin.