FishCondishTrinity River, CA Fishing Report & Live Conditions
Trinity River, CA fishing report
Below Lewiston Dam, the Trinity runs cold and clear year-round, making it prime tailwater habitat for wild steelhead and king salmon rather than warmwater species like largemouth bass, smallmouth, walleye, chain pickerel, catfish, or panfish — those fish simply don't establish here in this freestone-style cold release. Steelhead move through fall into late winter, with the best numbers typically showing after early rains push flows and trigger upstream migration. Spring Chinook follow their own run timing, while summer offers resident rainbow trout that hold in cooler pockets near the dam.
Watch your flow gauge closely — rising water after dam releases moves fish off their lies and into slack edges and seams behind boulders. Drift fishing with roe, beads, or yarn under a float covers those holding lies effectively, while swinging soft hackles and small streamers on a spey or single-hand rod works well when fish are active. In low, clear summer conditions, drop to lighter tippet and small nymphs. Water temperature below 50°F triggers the best steelhead aggression; once summer warms flows above 55°F, focus on early morning and evening near shaded, deeper runs.
Trinity River, CA river flow
The closest active USGS gauge to Trinity River, CA is TRINITY R A LEWISTON CA (site 11525500), about 0.3 miles away. It drains roughly 719 square miles. Flow is the single best predictor of where fish sit in moving water, so it is worth knowing what normal looks like before you read today's number.
In July, this gauge typically runs about 457 cfs.
| Month | Median flow |
|---|---|
| Jan | 302 cfs |
| Feb | 305 cfs |
| Mar | 305 cfs |
| Apr | 313 cfs |
| May | 1,160 cfs |
| Jun | 624 cfs |
| Jul | 457 cfs |
| Aug | 449 cfs |
| Sep | 443 cfs |
| Oct | 310 cfs |
| Nov | 300 cfs |
| Dec | 298 cfs |
Median flow from the USGS daily-statistics record. For the live flow, gage height, water temperature, and today's fishing score, open the Trinity River, CA dashboard.
What's biting near Trinity River, CA
The species most likely to be feeding the tailwater salmon and steelhead runs below Lewiston: largemouth and smallmouth bass, trout, walleye, chain pickerel, catfish, and panfish. FishCondish grades every hour of the day for Trinity River, CA and gives each species its own bite forecast, so you can see which window is worth fishing before you load the truck.
Trinity River, CA fishing FAQ
What fish can you catch at Trinity River, CA?
The species bite forecast for Trinity River, CA covers what's likely feeding there, including largemouth and smallmouth bass, trout, walleye, chain pickerel, catfish, and panfish — and updates with the live conditions.
What's the best time of day to fish Trinity River, CA?
Dawn and dusk are usually the most productive windows on the tailwater salmon and steelhead runs below Lewiston, particularly when the barometric pressure is steady or falling. FishCondish grades every hour of the day so you can pick the best one.
When is the best season to fish Trinity River, CA?
Spring and fall are typically strongest on the tailwater salmon and steelhead runs below Lewiston as water temperatures sit in the productive range, with summer fishing best early and late in the day. It varies year to year, so check the live conditions before you head out.
How do I know if it's a good day to fish Trinity River, CA?
FishCondish combines wind, water level, water temperature, pressure trend, and moon phase into a single 1–10 fishing score for Trinity River, CA, updated in real time — a quick go/no-go read before you make the trip.
Fishing tips for Trinity River, CA
New to these waters? Start with these beginner-friendly guides: