Skip to content
Henry's Fork Foundation Logo
  • Home
  • About
    • Our Mission
    • Board of Directors
    • HFF Staff
    • Careers
    • Internship Program
    • Annual Reports and Financials
    • Contact
  • Our Work
    • Science and Technology
    • South Fork Initiative
    • Farms and Fish
    • Education and Outreach
    • Voice of the River
    • DIRTT Plan
    • Henry’s Fork Watershed Council
    • Partners
  • Giving
    • Become A Member
    • Events and Raffles
    • HFF Hosted Trips
    • Legacy Giving
    • River Guardian
    • South Fork River Guardian
    • Clubs and Societies
    • Other Ways to Give
  • Resources
    • River Conditions
    • HFF Newsletters
    • Blog
    • Reports and Publications Library
    • Access Sites and Maps
    • History and Legends
  • Donate
  • Shop
  • Cart
  • Home
  • About
    • Our Mission
    • Board of Directors
    • HFF Staff
    • Careers
    • Internship Program
    • Annual Reports and Financials
    • Contact
  • Our Work
    • Science and Technology
    • South Fork Initiative
    • Farms and Fish
    • Education and Outreach
    • Voice of the River
    • DIRTT Plan
    • Henry’s Fork Watershed Council
    • Partners
  • Giving
    • Become A Member
    • Events and Raffles
    • HFF Hosted Trips
    • Legacy Giving
    • River Guardian
    • South Fork River Guardian
    • Clubs and Societies
    • Other Ways to Give
  • Resources
    • River Conditions
    • HFF Newsletters
    • Blog
    • Reports and Publications Library
    • Access Sites and Maps
    • History and Legends
  • Donate
  • Shop
  • Cart
Donate
$0.00 0 Cart
General
Gordon Nelson

Tax-Smart, Year-End Ways to Support our Mission

Here are five often overlooked ways you can support our important work in addition to traditional gifts by check or credit card.

Read More »
Gordon Nelson December 2, 2024
General
Brady Taylor

Recognizing Champions of Conservation: The Henry’s Fork Foundation’s Membership Societies

HFF honors its dedicated members through various recognition societies. These groups acknowledge those whose contributions support the Foundation’s science-based collaboration for healthy fisheries and watersheds across the Upper Snake.

Read More »
Brady Taylor November 29, 2024
General
Jamie Powell

A River That Connects Generations

Steven and Jesse Lowe In times of uncertainty, we often turn to the natural world for solace. For many of us, the Henry’s Fork provides

Read More »
Jamie Powell November 25, 2024
General
Jamie Powell

Healing and the Henry’s Fork

As scientists, we know that cold, clear water is crucial for trout. But what if it could do more than sustain life—it could heal?

Read More »
Jamie Powell November 19, 2024
Henry's Fork Watershed
General
Jack McLaren

Island Park Reservoir Oxygenation RFP

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

Read More »
Jack McLaren November 19, 2024
compilation of live on the river photos of snake river
Fisheries
Jamie Powell

$1 MILLION for Henry’s Fork DIRTT Plan

Can we improve hatches and the Ranch fishery? Meet the new DIRTT Plan.

Read More »
Jamie Powell October 2, 2024
Water quality basin plan infographic
Water Quality
Jack McLaren

Can We Improve Water Quality on Island Park Reservoir?

This is the 3rd blog in a series about research and conservation activity in the Upper Henry’s Fork, focusing on Island Park Reservoir….

Read More »
Jack McLaren September 26, 2024
Man taking water samples
Water Quality
Jack McLaren

What’s Island Park Reservoir Good for Anyways?

This is the 1st blog in a series about research and conservation activity in the Upper Henry’s Fork, focusing on Island Park Reservoir….

Read More »
Jack McLaren September 24, 2024
Map of the Snake river
Water Quality
Jack McLaren

ISLAND PARK RESERVOIR 101: HOW IT WORKS

This is the 2nd blog in a series about research and conservation activity in the Upper Henry’s Fork, focusing on Island Park Reservoir. …

Read More »
Jack McLaren September 24, 2024
2 Men sitting riverbank
Aquatic Insects
Jamie Powell

Why aren’t I seeing any big fish in the Ranch? Is it because of the bugs?

Why aren’t anglers seeing big fish in the Ranch? Are hatches changing?

Read More »
Jamie Powell September 12, 2024
Henry's Fork Foundation committee meeting
Water Quality
Jamie Powell

Last Chance Wastewater Treatment Plant Getting Ready for Upgrades

Fremont County operates a wastewater treatment facility (WWTP) on Forest Service ground in Last Chance. With the continued growth of…

Read More »
Jamie Powell September 11, 2024
Compilation of photos of foundation members
Water Quality
Jamie Powell

Watershed Council Tours Island Park Reservoir

Thank you to all of those who attended this year’s annual Henry’s Fork Watershed Council tour! Participants toured the Last Chance…

Read More »
Jamie Powell September 11, 2024
River and mountains
Water Quality
Jamie Powell

(2ND LOOK) 2023 Henry’s Fork Foundation Report

As summer transitions to fall, we’re reflecting back on where we were as of the start of the year. Originally published January 23, 2024….

Read More »
Jamie Powell September 3, 2024
Henry's Fork Watershed
Water Supply
Jamie Powell

FAQ: Is Outflow from Island Park Dam Higher Than it Used to Be?

Summertime outflow from Island Park Reservoir is lower (not higher) than it was in the “glory days”.

Read More »
Jamie Powell September 1, 2024
Man fly fishing in the river
Research and Monitoring
Jamie Powell

FAQ: Is it Too Warm to Fish? Water Temperatures on the Henry’s Fork

Do water temperatures on the Henry’s Fork get too hot to fish and should there be hoot owl closures?

Read More »
Jamie Powell August 31, 2024
Aerial view of a lake
Water Quality
Rob Van Kirk

State of the Henry’s Fork 2023: Water Year Technical Report

UPDATE: With only one month left in the 2024 water year, let’s take a look back at Water Year 2023, and get a preview of the types of…

Read More »
Rob Van Kirk August 30, 2024
2 men standing in river
Fisheries
Jamie Powell

HFF’s Membership Meeting Videos Live (VIDEO)

This year, the Henry’s Fork Foundation’s (HFF) annual membership meeting was hosted on June 5th in Island Park. Dr. Rob Van Kirk gave an…

Read More »
Jamie Powell August 26, 2024
Aerial view of Snake River
Water Quality
Jamie Powell

HFF Submits Comments on Henry’s Lake Flats Development

A continuation of the discussion around a proposed “airpark” and new Marriott in Henry’s Lake Flats.

Read More »
Jamie Powell August 24, 2024

FAQ: River Access and Recreation Regulations

Information about invasive species stickers, watercraft registration, outfitter licenses, and river recreation regulation.

Read More »
Christina Morrisett August 19, 2024
Henry's Fork Watershed
Water Quality
Jamie Powell

Organic Matter Causing Major Turbidity and Low Oxygen in Island Park

UPDATE: After 10 years of studying Island Park Reservoir, we thought we had seen just about everything possible, but the current event is…

Read More »
Jamie Powell August 2, 2024
rainbow trout caught on a fishing line
Research and Monitoring
Christina Morrisett

A New Way to Visualize Water Clarity

To help anglers plan their fishing day, the HFF launches a new way to visualize water clarity by showing how “brown” the river might be.

Read More »
Christina Morrisett July 15, 2024
man fly fishing
Water Supply
Jamie Powell

Mick & Mike Talk Henry’s Fork in the 1980s (VIDEO)

Mick Mickelson and Mike Lawson talk about the 1980s and what prompted the formation of the Henry’s Fork Foundation in 1984.

Read More »
Jamie Powell June 26, 2024
Hatch Timing Table
Fishing
Jamie Powell

How Does HFF Calculate Hatch Timing?

Rather than a typical “hatch chart”, HFF’s hatch timing calculations are based on accumulation of thermal units in the aquatic ecosystem….

Read More »
Jamie Powell June 20, 2024
man running tests in snowy river
Water Quality
Rob Van Kirk

Rain Vs. Snow [Part 5]

Increasing spring and summer air temperatures have a doubly negative affect on water quality.

Read More »
Rob Van Kirk March 8, 2024
Previous Page1 Page2 Page3 Page4 Next
Categories
  • General
  • Water Quality
  • Water Supply
  • Fishing
  • Fisheries
  • Aquatic Insects
  • Research and Monitoring
  • Intern
  • Social Science
  • Frequently Asked Questions
  • South Fork
  • Education and Outreach
Recent Posts
  • July 2026 Water Quality Forecast for Island Park
  • Summer 2026 Water Quality Forecast for Island Park
  • History of Water Quality in Island Park Reservoir
  • Reservoir Ices Off, Growing Season Turns On
  • Water Supply and Water Quality Predictions for Summer 2026
jumping trout decal

Contact

801 Main Street
PO Box 550
Ashton, Idaho 83420
(208) 652-3567

Tax ID # 82-0391884

Facebook-f Instagram Youtube

Quick Links

  • About
  • Giving
  • Our Work
  • Resources
  • Shop

Ways to Help

  • Donate
  • Events
  • Learn More
  • Contact

Subscribe to Weekly River Updates

"*" indicates required fields

Cover photo credit Charlie Lansche: LastChanceGallery.com

Copyright ©2026 • Henry's Fork Foundation, All rights reserved. HFF is a 501(c)3 nonprofit organization.
Website Development & Marketing by Arcane Marketing