Nimbus Dam

Overview

Nimbus Dam

Foundation: Up to 20 feet of alluvium underlain by bedded deposits of compacted tuffs and clayey volcanic sandstones and conglomerates


General
RegionFacilities in Mid-Pacific | Mid-Pacific Home Page
StateCalifornia
CountySacramento
ProjectCVP-Folsom
Dam Type
ReservoirLake Natoma
WatercourseAmerican River
Location
Longitude-121.2233
Latitude38.6367
Net Generation67,752,000 kWh
Original Construction1952-1955
Modified Construction
National ID NumberCA10174
Hydrologic Unit Code

Dimensions
Structural Height87 ft
Hydraulic Height (Normal Operating Depth at Dam)46 ft
Top Parapet (Elevation)
Spillway Crest Elevation
Crest Elevation132.0 ft
Crest Length1093 ft
Crest Width28 ft
Base Width135 ft
Volume of Dam Construction Materials121000 cu yd
Streambed at Dam Axis
Top of Exclusive Flood Control Pool (Elevation)
Top of Joint Use Pool (Elevation)
Top of Active Conservation Pool (Elevation)
Top of Inactive Conservation Pool (Elevation)
Top of Dead Storage Pool (Elevation)

Hydraulics & Hydrology
Volume
Total Water Storage at Elevation8760 acre-ft at 125
Maximum Water Surface Elevation
Normal Water Surface Elevation
Spillway Type
Auxiliary Spillway
Spillway Capacity at Elevation300000 cfs at 126.5
Auxiliary Spillway Capacity at Elevation
Uncontrolled Spillway Capacity at Elevation
Outlet Works Capacity at Elevation
Diversion Capacity at Elevation
Drainage Area1898 sq mi
Hydrometeorological Report (HMR)
Probable Maximum Flood (PMF) Report

Contact Information
Owner
TitleArea Office Manager
OrganizationCentral California Area Office
Address7794 Folsom Dam Road
CityFolsom, CA 95630
Phone (Office)916 989-7200
Operator
TitleArea Office Manager
OrganizationCentral California Area Office
Address7794 Folsom Dam Road
CityFolsom, CA 95630
Phone (Office)916 989-7200


Last updated: Jun 04, 2009