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….
What’s the difference between turbidity and sediment? Turbidity can be: Mineral sediment mobilized from reservoir bottom or suspended in…
Summertime outflow from Island Park Reservoir is lower (not higher) than it was in the “glory days”.
Do water temperatures on the Henry’s Fork get too hot to fish and should there be hoot owl closures?
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…
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…
A continuation of the discussion around a proposed “airpark” and new Marriott in Henry’s Lake Flats.
Information about invasive species stickers, watercraft registration, outfitter licenses, and river recreation regulation.
UPDATE: After 10 years of studying Island Park Reservoir, we thought we had seen just about everything possible, but the current event is…
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.
Mick Mickelson and Mike Lawson talk about the 1980s and what prompted the formation of the Henry’s Fork Foundation in 1984.
Rather than a typical “hatch chart”, HFF’s hatch timing calculations are based on accumulation of thermal units in the aquatic ecosystem….
Increasing spring and summer air temperatures have a doubly negative affect on water quality.
Fish are affected by life-history specific streamflow and habitat characteristics that are not simple, direct functions of water supply.
In recent years, HFF has expanded its work beyond the Caldera. Why? All roads lead to Island Park Reservoir, the center of the universe.
Water use + management in the Henry’s Fork watershed have much larger effects on streamflow than any changes due to precipitation type.
When snow makes up a larger fraction of total precipitation, prediction of irrigation-season water supply is more precise
All precipitation is not created equal. Water supply is lower when a greater percentage of our precipitation falls as rain instead of snow.
DIRTT, or Developing Infrastructure to Reduce Temperature and Turbidity, is the newest initiative launched by the Henry’s Fork Foundation…
In 2018, the Henry’s Fork Foundation began its Precision Management program. The motto for this program is “every drop, every day,…
Summary. New research by HFF scientists and interns demonstrates how adopting center-pivot sprinkler irrigation over the last 40 years…
Throughout August-September, there tends to be a lot of rooted aquatic plant (macrophyte) growth. These plants grow rapidly as they…
The Henry’s Fork is unique in that summer water temperatures between Island Park Dam and Pinehaven are affected more by air temperatures…
Why do you sometimes see fields being irrigated (watered) while it is raining? Isn’t this a waste of valuable water? This question is…
