trinity-river

Trinity River is a river in California.

It ranks #11 among the 17 waters of California in the registry, and is of national prominence.

Fished for steelhead, salmon and trout.

Species: steelhead, rainbow trout and chinook salmon.

USGS GNIS record: 236551.

Stretches: Fly Fishing Only Section.

Access points: Douglas City, Junction City and Lewiston.

Confluences: Weitchpec.

Features: Lewiston Dam.

Grays Falls (feature). It is fishable. Downstream end of a guide's BLM-licensed Upper Trinity stretch.

North Fork Trinity Confluence (confluence). It is fishable. Downstream boundary of the upper 40 miles.

Old Lewiston Bridge (access). It is fishable. Special-regulation section ends here.

It is upstream of Lewiston.

It is downstream of Lewiston Dam.

Pigeon Point (access). It is launchable. Named as a float destination.

Cedar Flat (access). It is fishable. Highway 299 West bridge; main stem open year-round from Old Lewiston Bridge to here.

Sourced from 2 independent fly sites.

Sources: captainexperiences.com, diyflyfishing.com (retrieved 2026-10-20), norcalfishreports.com and theflyshop.com (retrieved 2026-10-20).

Hatches

March Brown

Stage: adult. Sourced.

  1. Jan
  2. Feb
  3. Mar hatching
  4. Apr hatching
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec

Warm sunny March days can bring good hatches; still hatching when the upper reach opens April 1 (second source).

Sources: theflyshop.com, diyflyfishing.com

Blue-Winged Olive

Single or templated source.

  1. Jan
  2. Feb
  3. Mar
  4. Apr hatching
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec

Still hatching when the reach opens April 1. Single source.

Sources: diyflyfishing.com

Also named, timing not yet researched: October Caddis, Little Yellow Stonefly, Caddis, Pale Morning Dun.

Access, closures and rules change; check with the state agency before you go.