Waters · United States
Trinity River (Lewiston) fishing report
Updated Tuesday, 25 August 2026 · refreshed automatically through the day
A cold tailwater below Lewiston Dam and the Trinity hatchery, running through the mountains of Northern California — the state's most dependable steelhead water once autumn releases start.
Today's report: fair (41/100)
Chinook salmon is the most promising species on Trinity River (Lewiston) today. Water temperature at the gauge is 10.9°C (52°F) and barometric pressure is stable. Gauge TRINITY R A LEWISTON CA shows the water level rising (1 cm/24h).
Trinity River (Lewiston) water temperature and flow
- Water temperature: 10.9°C (52°F)
- Discharge: 13.1 m³/s (463 cfs) — up 3% over 24 hours
- Level trend: rising (1 cm/24h)
Measured at gauge TRINITY R A LEWISTON CA · reading 19 min ago. Published by the national hydrological service, not estimated by us.
Best time to fish today
- 11:00–13:00 local time — score 41/100
- 19:00–21:00 local time — score 43/100
- 23:00–01:00 local time — score 39/100
3-day outlook by species
| Species | Tuesday 25 Aug | Wednesday 26 Aug | Thursday 27 Aug |
|---|---|---|---|
| Steelhead | 22 — poor | 22 — poor | 24 — poor |
| Chinook salmon | 41 — fair | 42 — fair | 49 — fair |
| Brown Trout | 38 — poor | 36 — poor | 46 — fair |
Why this score
Cast & Scan uses a deterministic, published scoring model — no black box. The strongest influences on today's Trinity River (Lewiston) rating:
- solunar period: helping (+1)
- cloud cover: helping (+0.95)
- wind: helping (+0.9)
- precipitation: helping (+0.9)
- pressure trend: helping (+0.7)
- season: helping (+0.7)
Forecast computed Tue, 25 Aug 2026 11:18:58 GMT · data: Open-Meteo + gauge TRINITY R A LEWISTON CA · refreshed automatically through the day · see our published accuracy
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This page rates a representative point on Trinity River (Lewiston). Bays, river mouths and depth changes can fish very differently — open the scanner, drop a pin on your exact swim and get a spot-specific forecast with tactics. Free, in the browser, no signup.
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Nearby waters
- Feather River (Oroville) — California, USA (171 km away)
- Clear Lake — California, USA (188 km away)
- Rogue River (Grants Pass) — Oregon, USA (194 km away)
- American River (Fair Oaks) — California, USA (269 km away)