Facility · California ·
Managed by the USDA Forest Service
Trinity, California Wild and Scenic River (Recreational) · Open Access
Species Present: Rainbow, Brown and Brook Trout.
Seasons: Year around
Access: From Weaverville, take Highway 3 to Rush Creek road, turn right. Follow Rush Creek road to stop sign just past the town of Lewiston. Turn left on Trinity Dam Blvd. and follow about 2 miles to the lake. From Redding, take Highway 299 West thirty-seven miles. Turn right at the sign to Trinity Dam/Lewiston Lake on County Highway 105 (Trinity Dam Boulevard). Proceed 5.5 miles, through the town of Lewiston, to the junction of Hatchery Road and Trinity Dam Boulevard. Continue straight to Lewiston Lake or bear right to the hatchery and spawning riffles.
Camping: Developed campgrounds, boat docks, marina, accessible fishing access and a fish cleaning station are available.
Comments: Elevation 1,902 feet. 70 feet deep at dam. About five miles long. A quiet canoe lake. One boat launching ramp (Pine Cove) and one undeveloped launch area available. Rainbow trout abundant; Brown and Brook trout common. Speed limit for boats - 10 mph. Water very cold. Excellent fly fishing and a good lake for a float tube. Excellent wildlife viewing opportunities.
California Department of Fish and Wildlife Fishing and Hunting Regulations
40.72794, -122.80224 · 40°43'40.6"N 122°48'8.1"W
Typically 96°F in Jul, down to 48°F in Dec.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F | 50 | 56 | 62 | 68 | 77 | 87 | 96 | 94 | 89 | 76 | 58 | 48 |
| Low °F | 33 | 33 | 35 | 38 | 44 | 49 | 54 | 52 | 46 | 39 | 36 | 32 |
| Precip in | 6.0 | 4.7 | 4.1 | 2.6 | 1.7 | 0.9 | 0.2 | 0.1 | 0.3 | 1.9 | 3.5 | 6.5 |
1991–2020 averages from the nearest NOAA station, 0.4 mi away — not measured at the facility itself, and elevation can make a real difference over that distance.
Recreation.gov last updated this record on 2026-02-25.
Facility information and photographs from Recreation.gov (RIDB). SpotOpened is not affiliated with Recreation.gov or any federal agency.
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