Water Quality
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.
Jamie Powell
August 24, 2024
Fishing
FAQ: River Access and Recreation Regulations
Information about invasive species stickers, watercraft registration, outfitter licenses, and river recreation regulation.
Christina Morrisett
August 19, 2024
Fisheries
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…
Jamie Powell
August 2, 2024
Fisheries
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.
Jamie Powell
June 26, 2024
Frequently Asked Questions
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….
Jamie Powell
June 20, 2024
Fisheries
HFF Launches ‘The DIRTT Plan’
DIRTT, or Developing Infrastructure to Reduce Temperature and Turbidity, is the newest initiative launched by the Henry’s Fork Foundation…
Jamie Powell
February 29, 2024
Fishing
Macrophyte FAQ
Throughout August-September, there tends to be a lot of rooted aquatic plant (macrophyte) growth. These plants grow rapidly as they…
Jasper Davis
August 31, 2023
Fisheries
FAQ: Water Temperatures on the Henry’s Fork
The Henry’s Fork is unique in that summer water temperatures between Island Park Dam and Pinehaven are affected more by air temperatures…
Jasper Davis
July 12, 2023
Aquatic Insects
The Shrine of the Green Drake
What do you say when your best friend calls and asks you to be part of a plan he hatched for his daughter’s sixteenth birthday? His gift to her, in abstract, was a fishing experience that would be forever connected to this milestone day. I was asked to be part of the expedition because my friend is a novice angler with no knowledge or experience fishing the Henry’s Fork River.
Henry's Fork Foundation
December 28, 2022
Fishing
When does the river freeze in winter and does ice affect trout?
This information was first published in an HFF blog by Christina Morrisett and Rob Van Kirk in 2015. When does the river freeze? As far…
Jamie Powell
October 27, 2022
Fisheries
How Drought Affects the Henry’s Fork: A unique case among western rivers
What is the state of the drought in the Henry’s Fork Watershed? As of early April, water year precipitation sat at 79% of average (21%…
Jamie Powell
May 3, 2022