Lewiston Dam

Overview

Lewiston Dam

 


General
RegionFacilities in Mid-Pacific | Mid-Pacific Home Page
StateCalifornia
CountyTrinity
ProjectCVP-Shasta/Trinity
Dam Type
ReservoirLewiston Lake
WatercourseTrinity River
Location
Longitude
Latitude
Net Generation2,423,000 kWh
Original Construction1960-1963
Modified Construction
National ID NumberCA10165
Hydrologic Unit Code

Dimensions
Structural Height91.00 ft
Hydraulic Height (Normal Operating Depth at Dam)73.00 ft
Top Parapet (Elevation)
Spillway Crest Elevation1874.50 ft
Crest Elevation1910.00 ft
Crest Length745.00 ft
Crest Width
Base Width
Volume of Dam Construction Materials
Streambed at Dam Axis1829.00 ft
Top of Exclusive Flood Control Pool (Elevation)
Top of Joint Use Pool (Elevation)
Top of Active Conservation Pool (Elevation)1902.00 ft
Top of Inactive Conservation Pool (Elevation)1898.00 ft
Top of Dead Storage Pool (Elevation)1843.25 ft

Hydraulics & Hydrology
Volume
Total Water Storage at Elevation
Maximum Water Surface Elevation
Normal Water Surface Elevation1902.0 ft
Spillway Type
Auxiliary SpillwayNo
Spillway Capacity at Elevation30000 cfs at 1902.0 ft
Auxiliary Spillway Capacity at Elevation
Uncontrolled Spillway Capacity at Elevation
Outlet Works Capacity at Elevation325 cfs at 1902.0 ft
Diversion Capacity at Elevation
Drainage Area25.6 sq mi
Hydrometeorological Report (HMR)HMR 36
Probable Maximum Flood (PMF) Report

Contact Information
Owner
TitleArea Office Manager
OrganizationNorthern California Area Office
Address16349 Shasta Dam Boulevard
CityShasta Lake, CA 96019
Phone (Office)530-275-1554
Operator
TitleArea Office Manager
OrganizationNorthern California Area Office
Address16349 Shasta Dam Boulevard
CityShasta Lake, CA 96019
Phone (Office)530-275-1554


Last updated: Jun 04, 2009