About Trinity Alps Marina
Trinity Alps Marina is happy to provide moorage at our accommodating boat docks when you’re in or near Lewiston, Weaverville, Trinity County, or Douglas City, CA. We have a number of slips available, with per-day, -season and –year moorage options available.
Facilities
Petrol
Food
Boatbuilder
SupermarketCOORDINATES
40.81708 N, -122.76713 E
Port Information
Telephone
Berth Sizes
< 10m, 10-20m
Depth at MLW
2 - 3m
Manoeuvrability
Good
Channel Marking
Fair
Port of Entry
No
Overseas Visitor Berths
Yes
Dock Type
Floating
Style Side To
Yes
Style Stern To
Yes
Tidal Flow
Negligible
Active Winter
No
Weather Forecast
Sun
5AM - 9AM
17 May 2026
N 3 knots increasing to 8 knots. Gusts up to 18 knots.
Increasing from 2 to 9°C
UV Index: 0 - Low
Mostly fine
Sun
9AM - 1PM
17 May 2026
- NE 7–10 knots. Gusts up to 18 knots.
- Increasing from 10 to 17°C
- UV Index: 8 - Very High
- Mostly fine
Sun
1PM - 5PM
17 May 2026
- NE 10 knots. Gusts up to 19 knots.
- 15 to 20°C
- UV Index: 8 - Very High
- Sunny