South Fork & Henry's Fork Fishing Reports

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Big Lost River

Jimmy's All Seasons Angler / Big Lost River

Big Lost River, July 11th, 2020

 

Big Lost

Flow below Mackay Dam has been around 350 cfs for weeks. That makes for stability. Now is the time of year when golden stones and western green drakes activities take place in the river.  Most folks coming from over from Sun Valley will be fishing the river above the reservoir.

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Henry’s Fork, June 2nd, 2020

Most boat traffic now is on the Warm River to Ashton section of the river. But the most fish responding to the stone fly hatch is from Riverside Campground down to Bear Gulch with activity in Box Canyon coming on.  Look for boat traffic on these sections to be on the increase.   Give the lower river some more days before fish there begin looking for stoneflies again after digesting those from the early days of the hatch.  Fall River is putting in much run-off water. This will impact fishing below Chester Dam in the negative.

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Big Lost River, May 26th, 2020

With 211 cfs coming out of Mackay Dam, wading the river below is safe. If you want to avoid crowds such as on the Henry’s Fork and Henry’s Lake, the river here is a good choice with rainbows and an occasional brookie responding to PM BWO and all day midge activity.

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Big Lost River, May 16th, 2020

Big Lost

Flow out of Mackay Dam remains about constant at just under 250 cfs. This is a good flow for wading the river below, and it looks like some BWO weather will arrive in a few days.  So the river here offers a chance to get away from the crowds getting ready for stone fly activity on the lower Henry’s Fork.

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Big Lost River, April 7th, 2020

Flow out of Mackay Dam currently is about 132 cfs, making the river below very approachable for wading.  This flow rate has been near constant for several days, and with warming weather  stream-side ice & snow is disappearing. Midge and BWO activity make presenting life cycle patterns effective and the same can be said for presenting any small or medium sized nymph patterns.  Social distancing is an active part of fly-fishing, so getting out to the water is about as safe an activity around.

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Big Lost River, March 17, 2020

The Big Lost River becomes a popular fishery this time of year as snow melt increases to give some access below Mackay Dam.  Midge and BWO activity makes for good fishing. The Mackay area got hammered with about a foot of snow this last weekend, but the river below the dam is accessible where some snow banks remain.  Flow out of Mackay Dam was increased to 320 cfs last Tuesday.

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