South Fork & Henry's Fork Fishing Reports

Contact us for up to the minute fishing reports and conditions.

Fishing Reports

Jimmy's All Seasons Angler / Fishing Reports (Page 2)

Henry’s Fork, October17th, 2020

Downstream from Island Park Reservoir flow is lower than normal at every gauge location.  BWOs are abundant everywhere. Look for sheltered areas along the river for best activity from them and responding fish.  Do not forget to place streamer patterns in that fly box, because brown trout are beginning spawning migrations and are in an aggressive mood. Low light conditions will give the best conditions for encountering them.


South Fork October 17th, 2020

Flow out of Palisades Dam has been ramped down to 3980 cfs ( now 4610 cfs at Heise, 2380 at Lorenzo).  This makes for even more wading  locations. Even with the wind this is good BWO conditions up and down the river.  There are plenty of sheltered spots along the river, especially in side channels. Don’t forget to have streamer patterns in that fly box; they are becoming more effective each day this time of year.

Chad Larson (208-346-1459) tells us Thursday evening he lost a green & black Cabela’s backpack between Kelly’s Island and Wolf Flat.  Contents include a Pfleuger reel, multi-compartment box of flies, dual sided snap box of flies, and assorted tools.  Chad would much appreciate recovery if you find this item.


Henry’s Fork, October13th, 2020

With respect to BWO and mahogany dun activity and steamer presentation on the lower river, what applies to the South Fork applies here. Wind can diminish the mayfly activity, but unsettled conditions do not hurt streamer fishing. Flow throughout is a bit below average for the time of year.


South Fork, October 13th, 2020

From Squaw Cr. Dugway (800x600)

The river helps the BWO and mahogany dun activity by having a near constant flow ( 6050 cfs at Irwin, 6700 cfs at Heise, 3550 cfs at Lorenzo) of clear, cool water for several days, but it looks like a drop in flow out of Palisades is coming up.  Everything these unsettled days works in favor of mayfly activity except for the WIND, that is, and lately it has been fierce during afternoons when they should be most active.  So expect slower action when wind comes up.  But that is not the case with streamers. Bad weather usually means they are effective because of increased overhead cover. So continue taking BWO and mahogany dun life cycle and streamer patterns and the gear to present them during the fall season.


Still Waters, October 10th, 2020

Water is quite low at Daniels, but fishing is good with fish responding to midge pupa under an indicator and slowly trolled leech patterns. The cooler weather predicted for the next week is just what is needed to improve fishing at such as Chesterfield and Treasureton Reservoirs and at Sand Creek Ponds.


Main Stem Snake River, October 10th, 2020

Whether you walk-in or fish from a boat this is the time of year to encounter brown trout on the river anywhere above American Falls Reservoir.  Streamer fishing is the name of the game and there are many locations along the river to do so.  Below the reservoir the river is discolored and lower than normal for the time of year.  The reservoir has been dropped for work on the spillway ( now completed), but the fishing is good.  Fish streamers deep.


Henry’s Lake, October10th, 2020

We hear fishing is picking up on the lake especially the west side. Stick to water less than 10 feet deep and use an intermediate line.  Use caution because a storm is coming in this weekend and unsettled weather is in store for early next week.


Henry’ Fork, October 10th, 2020

With the river so low below Island Park Dam (135 cfs today), it is time to pitch streamers into the big Box Canyon holes where fish will concentrate.  Look for weeds braking up along the Last Chance-Harriman reach and fish responding to BWOs and what is left of early AM tricos. Hoppers along this part of the river are soon to be things of the past. The lower river now offers better fishing with BWO, mahogany duns, a fading hopper population and best of all browns responding to streamers. Look for streamer fishing to improve with the unsettled weather coming up in the next few days.


South Fork, October 10th, 2020


Just above Heise Br. (640x480)

Flow is just a bit higher than normal for the time of year: around 6000 cfs at Irwin, 6630 cfs at Heise, 3280 cfs at Lorenzo.  Water is crystal clear and cooling.  Only sad happening is that fall colors will soon be a thing of the past. Riffle fishing seem to be picking up with BWO and mahogany dun action bringing fish up.  Add caddis activity during PM.  With a stormy weekend predicted this action may get even better, but do not overlook presenting streamer patterns.