Henry’s Fork, September 19th, 2023

Henry’s Fork Drainage Water Status Report Filed Yesterday by Dr. Rob Van Kirk

Headlines

• Last week was on the warm and dry side, dropping water-year total precipitation to 110% of average.
• Diversion and natural streamflow each decreased a little over the weekend, keeping lower-watershed conditions stable.
• At an average outflow of 469, Island Park Reservoir gained 67 ac-ft/day over the weekend and is 64.1% full, compared with 45.5% on average.
• Water quality continues to be good to excellent throughout the watershed.

Rob Van Kirk, Ph.D.

Senior Scientist

Henry’s Fork Foundation

P.O. Box 550

Ashton, ID 83420

208-881-3407 CELL

208-652-3568 FAX

The Tubs: A Great Place for Streamer Fishing on the Henry’s Fork

No killing frosts to date anywhere along the river. That means terrestrial insects, Early AM spinner falls, BWOs (activity peaking during PMs), mahogany duns (activity peaking during mid-day) and caddis (activity peaking during PMs) remain in place making top water fishing attractive. Unsettled weather is coming in a day or so and will remain for the rest of the week. Let’s see what impact it has on top water fishing and dry dropper rigs which have been so effective up and down the river. Such weather is sure to be good for pitching streamers and for BWO activity.