Fishing Reports

Henry’s Fork, August 17th, 2024

Because of cooler late summer air and less daylight, we are past the dissolved oxygen and water temperature concerns of the year for the upper river. This means that catch and release fishing throughout the day generally will not stress subjected salmonids. So beginning with the AM trico activity on to when terrestrial insects, speckled dun mayfly and caddis fly activities take over, enjoy what the river offers

( be sure to have flying ant patterns in that fly box ). It will be a few weeks before these thoughts apply to the lower river.

A UNIQUE TOUR AVAILABLE AUGUST 20

Every year, the Henry’s Fork Watershed Council hosts a “Watershed Tour”. Participants visit sites within the watershed where water issues or key projects are occurring. This year, the tour will focus on Island Park Reservoir, Island Park Dam, and Last Chance Wastewater Treatment Plant to discuss the theme of water quality in the Henry’s Fork Watershed. The reservoir portion of the tour will be conducted via pontoon boat, so participants must RSVP to [email protected] to reserve a spot. The tour is scheduled to run from 9 AM – 3 PM, Tuesday, August 20th. For more information, please email [email protected].

Henry’s Fork, August 13th, 2024

 Flow out of Island Park Dam is at seasonal amounts but reservoir volume is a bit below normal.  There can some good fishing on the west end around such as Grizzly Springs. Try red midge pupa patterns under an indicator to find the taking depth.  Cloudy conditions with some thundershowers have helped in keeping water temperatures below dangerous levels for salmonids. Early AM tricos make up the “name of the mayfly game.”  After this diminishes about mid-day, presenting ant and hopper patterns can bring action.  As we move through August, flying ants will increase in numbers and will be sought by trout especially along the upper river.

Flies to fish:

• Red Mirage Zebra Midge
• Indicator Para Trico
• Chubby Cubby-Brown

Henry’s Fork, August 10th, 2024

The effects of water temperature and dissolved oxygen on salmonid well being will begin to wind down now with less daylight coming through shorter days and cooler nights as we move through August. Cooler air temperatures and less daylight means more active trout. The river from Island Park Dam to Pinehaven is a good example of this coming on. Early in the day trico activity is the major mayfly event up and down the river now with some speckled duns coming out in slow water reaches. Terrestrial insect patterns, especially those for ants and hoppers will produce later in the day as will those for the caddis life cycle.

Flies to fish:

• CDC Trico Spinner
• Unsinkabeetle-Black