Henry’s Fork, January 31st, 2023

Fly Fish Food Jimmy's / Fishing Reports / Henry’s Fork, January 31st, 2023

Henry’s Fork, January 31st, 2023

January 31, 2023

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Fishing Reports, Henry's Fork

Headlines from Dr. Rob Van Kirk’s Snow-Water Equivalent Report Compiled Yesterday

Yesterday’s watershed-averaged minimum and mean temperatures ended up just a fraction of a degree warmer than those on December 22, but most stations in the watershed set new low-temperature records for the date.
Water-year total precipitation is 104% of average, and SWE is at 106% of average.
If SWE stays at 106% of average the rest of the winter, expected April-September streamflow will be 90-95% of average.
At an outflow of 266 cfs, Island Park Reservoir gained 104 ac-ft yesterday and is 77% full, compared with 75% full on average.

Rob Van Kirk, Ph.D.

Senior Scientist

Henry’s Fork Foundation

P.O. Box 550

Ashton, ID 83420