Henry’s Fork, August 22nd, 2023
Headlines from Dr. Rob Van Kirk’s Henry’s Fork Drainage Water Status Report Filed Yesterday (8/21)
- Yesterday was the wettest day in the watershed since December 1, 2022, increasing water-year total precipitation to 109% of average; we will end water year 2023 with at least 102% of average precipitation.
- Natural flow increased by 6% over the weekend, while diversion dropped by 5%.
- Outflow from Island Park Reservoir is being decreased by 200 cfs to around 670 cfs this morning. The reservoir is 62.3% full, compared with 54.5% on average.
- Water quality was excellent throughout the watershed yesterday.
- 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
- [email protected]
The current overcast and cooler weather is ideal for increasing the spinner falls, trico and speckled dun activity up and down the river. It may slow hopper activity a bit, but warmer, brighter days will return and bring back activity from these bugs. Flying ant populations are building, and for weeks to come trout will key on them.