South Fork
SUMMER ON THE SOUTH FORK
It’s no secret that the Henry’s Fork is a river of grandeur. To those that fish it, it is like a church – a sanctuary
Patrick Nardi
July 23, 2026
Intern
(Almost) Snow-less Snow Science
As an MSU undergrad studying snow science, a summer internship might sound unlikely. Fortunately, snow is an invaluable resource year-round out here in the west,
Sam Pruitt
July 16, 2026
Intern
My First Time Fly Fishing
Claude’s secret but likely identifiable fishing spot My first Sunday in Ashton, Claude, the Washington and Lee Intern, did me the great kindness of taking
Audrey Hunter
July 15, 2026
Intern
Balancing Analysis and Adventure: A Week with the Field Work Intern
My name is Kathryn (Kate) Shiffler and I am the field work intern here at the foundation this summer! I am a rising sophomore at
Kate Shiffler
July 14, 2026
Intern
The Summer I Turned Crispy
Unfortunately, I am a child. I graduated from high school an entire month ago. I was a Senior, with all the absolute power and respect
Tate Sargeant
July 10, 2026
Intern
The Story Behind the Data
As an undergraduate studying economics and environmental studies, I have done my fair share of data analysis and modeling. I applied to work at the Henry’s Fork
Claude Morris
July 10, 2026
Water Supply
July 2026 Water Quality Forecast for Island Park
In early April, when ice melted off Island Park Reservoir one month earlier than usual, scientists at the Henry’s Fork Foundation (HFF) predicted an early
Christina Morrisett
June 29, 2026
Water Quality
Summer 2026 Water Quality Forecast for Island Park
This article was originally published in Island Park News on May 29, 2026 Ice melted on Island Park Reservoir on March 31, 2026—four weeks earlier
Christina Morrisett
May 28, 2026
Water Quality
History of Water Quality in Island Park Reservoir
Warmer and drier conditions have slowly degraded water quality in Island Park Reservoir over the last 50 years. In the 1970s and 1980s, federal reports
Christina Morrisett
May 22, 2026
Water Quality
Reservoir Ices Off, Growing Season Turns On
Photo of an ice-free Island Park Reservoir taken on March 31, 2026 On March 31, 2026, with no accompanying commentary, HFF scientist Christina Morrisett stood
Christina Morrisett
May 7, 2026
Water Quality
Water Supply and Water Quality Predictions for Summer 2026
The photo above captures the unprecedented situation we face at the beginning of April. The photo, of the confluence of Warm River and the Henry’s
Rob Van Kirk
April 10, 2026
Water Quality
Water Year 2025: Everything you wanted to know and a lot more!
Every year since 2017, the Henry’s Fork Foundation Science and Technology Team has produced an annual technical report that documents all of our data collection
Rob Van Kirk
April 1, 2026
Fisheries
Q&A: Are We Seeing Fewer Bugs?
Are aquatic insects actually declining? Not in the way many anglers might think. After 11 years of data collected across six sites on the Henry’s
Jamie Powell
March 30, 2026
Water Supply
Monitoring the Upper Snake Snowpack: Updates from the Field
Hello! My name is Otto Lang, and I am a postdoctoral researcher with Boise State University and the Henry’s Fork Foundation. I’m working alongside Rob
Otto Lang
March 27, 2026
Water Quality
Henry’s Fork Aquatic Invertebrate Trends, 2015-2025
To address angler concerns about decreased hatches, particularly at Last Chance and the upper Ranch, and holistically assess ecological function throughout the mainstem Henry’s Fork,
Rob Van Kirk
March 23, 2026
Water Quality
Fish of the Month: Year 11
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
Rob Van Kirk
December 31, 2025
Water Quality
Estimation of Thurmon Creek sediment load following the drawdown of Silver Lake
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
Rob Van Kirk
December 10, 2025
Fishing
River Guardian Spotlight: Tom and Doris Squeri
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
Jamie Powell
December 8, 2025
Water Supply
Winter Flows on the Henry’s Fork: What Anglers Need to Know
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
Jamie Powell
November 26, 2025
Water Quality
Silver Lake Sediment Event: What Happened, What We Saw, and What We’re Doing About It
The Henry’s Fork Foundation (HFF) has become aware of, and is actively investigating, the recent draining of Silver Lake in Harriman State Park. The sudden
Jamie Powell
November 21, 2025
Water Quality
FAQ: Silver Lake Sediment Event
The Henry’s Fork Foundation (HFF) has become aware of, and is actively investigating, the recent drawdown of Silver Lake in Harriman State Park. The sudden
Jamie Powell
November 21, 2025
Fishing
From the Henry’s Fork to the One Fly: A Legacy Comes Full Circle
Guest Article by Mike Lawson, Henry’s Fork Anglers In early September, the Eagle Rock Wranglers, consisting of my youngest son, Chris, Mark Rockefeller (the owner
Jamie Powell
November 12, 2025
General
FAQ: Pilot Relocation of Wild Rainbows
Q: What does “relocation” mean? A: Relocation means carefully moving wild trout from one part of our watershed to another under IDFG oversight. It is
Jamie Powell
October 10, 2025
Research and Monitoring
Pilot Relocation of Wild Rainbows Demonstrates Adaptive Science to Strengthen the Henry’s Fork Fishery
In a first-of-its-kind adaptive science effort for the Henry’s Fork, the Idaho Department of Fish and Game (IDFG) and Henry’s Fork Foundation (HFF) are launching
Jamie Powell
October 10, 2025