Lewiston Dam
Dam in Trinity County, California · Trinity River · forms Lewiston Lake
Height
91 ft
28 m (NID height)
Length
745 ft
227 m
Completed
1963
Lewiston Lake today
1,900.81 ft
7 days ▼ 0.73 ft
Normal storage
14,660 acre-ft
Reservoir level measured Oct 21, 2026, 1:00 AM PDT. Full level page →
Facts
- Purposes
- Water Supply
- Dam type
- Earth
- Structural height
- 91 ft
- Owner
- BUREAU OF RECLAMATION (Federal)
- Maximum storage
- 14,660 acre-ft
- Surface area
- 750 acres
- Hydraulic height
- 73 ft
- Drainage area
- 719 sq mi
- Spillway
- Controlled, 60 ft wide
- Army Corps district
- Sacramento District
- Also known as
- Lewiston Lake
- NID ID
- CA10165
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Nov 21, 2024. Search NID ID CA10165 at nid.sec.usace.army.mil. Project website.