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Scroll through to read the most recent HFF Blogs and articles. Or click on the keywords at the top of the page to sort blogs and articles by topic.

Understanding SWE and Snowpack in Winter

Jamie Powell

Jan 12

Understanding SWE and Snowpack in Winter

What is Snow-Water Equivalent (SWE)? When it comes to how snow will benefit the river, looks can be deceiving. That's why we report...

30 views

Jamie Powell

Jan 12

Top 10 for 2022

At the end of each year, the Henry's Fork Foundation (HFF) takes a moment to reflect back on some memorable events and accomplishments...

63 views

Rob Van Kirk

Jan 4

Fish of the Month Year Eight

Stone Bridge in January, where fish-of-the-month usually starts. Decades ago, Henry's Fork Anglers guide Tom Grimes and I started a...

139 views

The Year 2022 in Review: Can you say "cold, wet spring?"

Rob Van Kirk

Jan 3

The Year 2022 in Review: Can you say "cold, wet spring?"

A cool, rainy sunset at Vernon Bridge in May. Climate. Peak snow water equivalent (SWE) was 71% of average and 3rd lowest in the...

98 views

Henry's Fork Foundation

Dec 28, 2022

The Shrine of the Green Drake

Left to right: Myles Greenberg, Michele Greenberg, and Scott Jolley. Written by Scott Jolley *Scott passed away in 2021. Below is his...

321 views

Rob Van Kirk

Nov 21, 2022

Irrigation Year 2022 Summary

While natural streamflow clearly reflected long-term hydrologic conditions and short-term precipitation and temperatures, patterns in...

27 views

Harmful Algal Blooms and Island Park Reservoir

Jamie Powell

Oct 28, 2022

Harmful Algal Blooms and Island Park Reservoir

A recent Hatch Magazine article discussed the occurrence of harmful algal blooms (HABs) or cyanobacteria in Henrys Lake primarily, but...

126 views

When does the river freeze in winter and does ice affect trout?

Jamie Powell

Oct 27, 2022

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...

181 views

Jamie Powell

Oct 12, 2022

Programs and Impacts -- 2022

We continue to try to share as much information as possible in as many ways as possible, to try to reach everyone who might be...

86 views

Changes to Lower River Management Benefit Upper River

Christina Morrisett

Oct 6, 2022

Changes to Lower River Management Benefit Upper River

Highlights: The lower river between St. Anthony and Parker is an important summer management lever for Island Park Reservoir. The Drought...

93 views

Water Year 2022 Summary: Island Park Reservoir Management

Rob Van Kirk

Oct 5, 2022

Water Year 2022 Summary: Island Park Reservoir Management

Headlines: Winter inflow to Island Park Reservoir was the second lowest in the 1934-2022 record, but the outflow of 220 cfs was higher...

7 views

Water Year 2022 Summary: Natural Streamflow

Rob Van Kirk

Oct 3, 2022

Water Year 2022 Summary: Natural Streamflow

Headlines: Natural streamflow was 72% of average, ranking as the driest year in the 1978-2022 record. By subwatershed, natural flow was...

3 views

Rob Van Kirk

Oct 2, 2022

Water Year 2022 Summary: Climate

Headlines: Peak snow water equivalent (SWE) was 71% of average and 3rd lowest in the 1989-2022 record, but SWE peaked on April 24, 12...

4 views

Jamie Powell

Sep 14, 2022

Why has turbidity been high this year?

The short answer: A record cold spring, followed by extreme heat and record dry conditions contributed to a need for high outflow from...

33 views

HFF-South Fork Initiative Request for Proposals

Dave Weskamp

Sep 12, 2022

HFF-South Fork Initiative Request for Proposals

The Henry’s Fork Foundation (HFF)--South Fork Initiative (SFI) is soliciting proposals from qualified firms for the assessment and design...

60 views

Major weather change brings potential for sediment delivery at Island Park Dam

Rob Van Kirk

Sep 8, 2022

Major weather change brings potential for sediment delivery at Island Park Dam

A major weather pattern change away from recent record-breaking heat to more seasonable early-autumn conditions brings with it the...

50 views

How did Senior Scientist Rob Van Kirk’s predictive models hold up this year?

Jamie Powell

Aug 16, 2022

How did Senior Scientist Rob Van Kirk’s predictive models hold up this year?

Here are just a few excerpts from Rob's spring predictions and how that compares to what happened this summer. Prediction vs Actual...

87 views

Frequently Asked Questions: Turbidity in Island Park Reservoir Outflow

Rob Van Kirk

Aug 11, 2022

Frequently Asked Questions: Turbidity in Island Park Reservoir Outflow

Why is turbidity higher when flow comes out of the gates? Two dam outflow points: 1) original dam gates and 2) power plant siphon Gates...

110 views

Hailey Phillips

Jul 29, 2022

My 2-Year Plan

My summer at HFF is coming to a close! Luckily for me, I will be staying two weeks longer than the other interns, so I don’t have to say...

88 views

Reflecting on my time as the Farms and Fish intern

Chloe Perel

Jul 28, 2022

Reflecting on my time as the Farms and Fish intern

It’s Week 8 of 10 and it is hard to believe that the Henry’s Fork Foundation summer internship program is already wrapping up. It feels...

38 views

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