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Island Park Reservoir Oxygenation RFP

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Henry's Fork Watershed

One of the objectives of the DIRTT project is to evaluate a project to oxygenate Island Park Reservoir. This could provide a series of benefits to the Henry’s Fork River downstream including:

  • Reduced algae blooms that contribute to turbidity downstream
  • Reduced nutrient concentrations
  • Create opportunities for expanded fisheries within Island Park Reservoir and upstream; fish habitat increases up to 350% for migratory trout and kokanee salmon.

To evaluate the costs and benefits of such a large project, the HFF is soliciting help from engineering and limnology firms with experience in lake and reservoir management, oxygenation, and aeration. We’re requesting proposals for an initial technical report on the feasibility of such a project, including conceptual design, budget estimates, and an evaluation of benefits. Full details of our Request for Proposals are available for download here. Please distribute widely.

Download Request for Proposal (RFP)

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Water Quality
Christina Morrisett

Breathing Easy: Oxygenation in Island Park Reservoir

This story was written by Audrey Hunter (2026 intern) and was originally published in the Fall 2026 Newsletter. It’s no secret that late summers on Island Park Reservoir haven’t been in perfect conditions in recent years. Warm, turbid, algae-filled water plague reservoir recreationists while diminishing water quality downstream. Cyclical algal blooms decrease water clarity and create less-than-ideal circumstances for the reservoir’s flora and fauna. What’s the solution? HFF’s DIRTT Plan. In-Reservoir Oxygenation Nutrients released from

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Christina Morrisett September 23, 2026
Drone image of Island Park Dam taken on September 9, 2026
Water Supply
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Christina Morrisett September 16, 2026
General
Jasper Davis

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Jasper Davis September 9, 2026
General
Jasper Davis

Island Park Reservoir Current Conditions (9/4/26)

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Jasper Davis September 4, 2026