Visual abstract for the 2025 HFF Membership Meeting created by Teddy Montalvo, 2025 Baucus Climate Scholar
On June 19, we gathered at the Boys House in Harriman State Park for the 2025 HFF Membership Meeting. In addition to meeting in a new place, we also tried a new structure: a 30-minute presentation by our Communications Team followed by a 30-minute Panel Q&A with members of HFF’s Science & Technology Team. Thank you to all who joined us! Missed the meeting? You can watch the meeting recording here. Want the highlights? Read below or check out the visual abstract above!
Like many Western rivers, it’s warmer and we have less water. In the Henry’s Fork specifically, summer air temperatures have increased by about 1°F per decade over the last 40 years. These warmer temperatures play a key role in the lower water supply we’re experiencing and create a cascade of other challenges: less winter flow, decreased trout numbers, changes to hatch timing, and deterioration of mid-summer water quality in both Island Park Reservoir and the Henry’s Fork downstream.
Mother Nature is giving us lemons and HFF is doing our best to make lemonade. In the last year, HFF was awarded three WaterSMART grants to continue our water conservation work and pursue big, bold solutions for water quality.
Our panel discussion was led by audience questions and largely focused on DIRTT Plan details, the Henry’s Fork Hatch Data Survey, and HFF’s efforts regarding Planning & Zoning decisions in the watershed.
All of us here at the Henry’s Fork Foundation thank each and every one of you, our dedicated and kind membership, for your support this year and over the last 40 years. We could not do this work without you.
As it is the afternoon of December 31, I am closing the year with my annual fish-of-the-month blog, this one at the end of my 11th year of catching a fish in my home waters in each month of the year. To spare you the math, that’s 132 consecutive months of catching a wild trout or whitefish (and in some years I’ve fair-caught suckers and shiners, too) within a three-hour drive of my home in
In this blog post, we 1) present our turbidity and suspended sediment data, 2) explain our suspended load calculations, and 3) provide some additional information justifying why we think that a substantial amount of bed load was transported into the Henry’s Fork in addition to the suspended load. Since first observing high turbidity in Thurmon Creek and the Henry’s Fork downstream associated with the Silver Lake drawdown in November 2025, HFF’s Science and Technology team
Written by Doris Squeri Tom and I met on our first day of grad school back in 1982. We were both broke and stressed, and we both loved the outdoors, so I decided that an affordable way to relieve some of that stress might be to learn how to fly-fish. We had learned to fish with our dads when we were very small, but it was bait fishing, and we wanted to try something new.
The Henry’s Fork Drought Management Planning Committee (DMPC) met on Monday, November 24 to set this winter’s outflow and reservoir-fill strategy for Island Park Reservoir—an annual decision with implications for winter trout habitat in Box Canyon and the Ranch. Winter Outflow: What’s Coming on December 1 Beginning December 1, outflow from Island Park Dam will increase, bringing winter streamflow through Box Canyon to ~380 cfs from December through February*. That equates to 76% of Box
