Island Park
Henry's Fork
Live Conditions
Henry's Fork — Near Island Park
7-Day Flow
→ Stable
24-Hr Pressure
23.74 inHg · ↓ Falling
Local Weather
Good window — fish are feeding
Today
☀️Clear sky
73° / 36°
Tomorrow
🌤️Mainly clear
77° / 44°
Sat
🌦️Drizzle
73° / 54°
Sun
🌦️Drizzle
71° / 48°
0.01"
Cold front incoming — go deep with nymphs, surface activity likely slow.
Weather by Open-Meteo · No API key · Updated every 30 min
What should I fish today?
One call. Specific to today's exact conditions on the Henry's Fork.
9
Time of Day
What should I pack?
Rod, flies, tippet, and safety gear specific to today's Henry's Fork conditions.
🪰 Hatch Calendar
Henry's Fork · June · Early Summer
Showing typical dates — water temperature data unavailable for live hatch predictions.
Select month
GREEN DRAKES (size 10-12) hatching late month — one of the most iconic dry fly hatches in the West. PMDs starting (size 14-16). Caddis (size 14-16). Salmonflies in lower river. Harriman Ranch opens June 15 — book early.
River Map
About Henry's Fork
World-famous spring-fed river through the Island Park caldera. Iconic Pale Morning Dun, Trico, Green Drake, and Callibaetis hatches over selective rainbows and brown trout — Harriman Ranch is fly-only catch-and-release.
Regulations
Harriman Ranch (Last Chance to Pinehaven / Osborne Bridge) is fly-fishing only and catch-and-release year-round. Other stretches have variable seasons and tackle rules — check current IDFG regulations before you go.