West Coast
Trinity River
Live Conditions
Trinity River — Trinity River at Lewiston
7-Day Flow
↑ Rising
24-Hr Pressure
27.71 inHg · → High/stable
Local Weather
Tough conditions — fish deep
Today
☁️Overcast
87° / 48°
Tomorrow
☁️Overcast
68° / 54°
Wed
🌧️Rain
56° / 53°
0.85"
Thu
🌦️Drizzle
62° / 48°
0.07"
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?
⚡ AIAI-powered recommendation using today's live flow, temperature, and hatch data.
8.6
Time of Day
Using: 1,180 CFS · 51.4°F · BWOs returning
What should I pack?
Rod, flies, tippet, and safety gear specific to today's Trinity River conditions.
🪰 Hatch Calendar
Trinity River · September · Early Fall
🟢 Active now at 51.4°F water
🟡 Approaching — within 5°F of trigger range
Select month
BWOs returning (size 18-20). Mahogany Duns. SUMMER STEELHEAD beginning to push up from the Klamath.
🟢 Active · 🟡 Approaching · ⚪ Seasonal only
River Map
About Trinity River
The Trinity River below Lewiston Dam is California's top steelhead tailwater, with consistent cool flows supporting runs of both winter and summer steelhead. The Lewiston tailwater section holds wild rainbow trout year-round, while steelhead push up from the Klamath from October through April. The Hoopa Valley Tribe co-manages the fishery.
Regulations
All wild steelhead (intact adipose fin) must be released statewide. Hatchery steelhead (clipped adipose fin) may be kept — check current CDFW regulations for bag limits. California Steelhead Report Card required ($10.29) when fishing for steelhead. California Sport Fishing License required.
Learn More
Guides to help you fish Trinity River with more confidence.
California Fly Fishing Regulations Guide
California Sport Fishing License, the separate California Steelhead Report Card required statewide for steelhead fishing, the wild steelhead release…
Trout Species of California
California's California Golden Trout (the state fish, native only to South Fork Kern above Kern Falls), the historic McCloud River Redband Rainbow…
Eastern Sierra Fly Fishing: California's High Desert Trout Waters
The Owens River gorge, Hot Creek, and the Walker River system define Eastern Sierra fly fishing — spring creek tactics at elevation in volcanic high…