South Fork of the Snake
Rivers
- Flow
- 3070 cfs
- Change in 24 hours
- 0 cfs
From the U.S. Geological Survey, Snake River near Heise, ID, updated 7:44 pm.
Forecast for South Fork of the Snake
57°F Mostly Clear
- Tonight Low 40° Mostly Clear
- Monday High 67° · Low 45° Sunny
- Tuesday High 63° · Low 44° Chance Light Rain then Slight Chance Showers And Thunderstorms
Forecast from the National Weather Service, updated 7:44 pm.
Along the river
Snake River near Menan
Rivers
- Flow
- 2150 cfs
- Change in 24 hours
- -80 cfs
From the U.S. Geological Survey, Snake River near Menan, ID, updated 7:44 pm.
South Fork at Irwin
Rivers
- Flow
- 2480 cfs
- Change in 24 hours
- -50 cfs
From the U.S. Geological Survey, Snake River near Irwin, ID, updated 7:44 pm.
South Fork at Lorenzo
Rivers
- Flow
- 1360 cfs
- Change in 24 hours
- -10 cfs
From the U.S. Geological Survey, Snake River at Lorenzo, ID, updated 7:44 pm.
Latest reports
Fishing Report - October 3rd, 2026
Henry's Fork Anglers
Upper Henry's Fork: Flows in Box Canyon are currently 181 CFS. Box Canyon has had several large changes in streamflow in the last several months, and with the dropping flows the fishing has turned for the best. Some Rainbows from…
Fishing Report - September 19th, 2026
Henry's Fork Anglers
Upper Henrys Fork: Flows in Box Canyon are currently 836 CFS. Box Canyon has had several large changes in streamflow in the last several weeks, so the quality of the fishing has been swinging like a pendulum. For the time…
Fishing Report - August 30th, 2026
Henry's Fork Anglers
Upper Henrys Fork: Flows in Box Canyon are currently 985 CFS. Box Canyon is a fantastic choice this time of year as the water remains cooler exiting the island park reservoir into the canyon. This section is loaded with fish…
Fishing Report - August 14, 2026
Henry's Fork Anglers
Upper Henrys Fork: Flows in Box Canyon are currently 1012 CFS. Box Canyon has been fishing well, mostly nymphing and streamers producing, but if you felt compelled to fish a dry a small purple chubby chernobyl or a Henry’s Fork…
Fishing Report - August 1, 2026
Henry's Fork Anglers
Upper Henrys Fork: Flows in Box Canyon are currently 1050 CFS. Box Canyon has been fishing solid, with most fish now being picked up on the nymph. Flows out of the reservoir are starting to drop, which makes wading easier…
Fishing Report - July 24, 2026
Henry's Fork Anglers
Upper Henrys Fork: Flows in Box Canyon are currently 1290 CFS. Box Canyon has been consistently producing good numbers of fish, and with the flows beginning to drop back down wading is becoming more feasible. At these high flows, fishing…
