Spaulding Lake Reservoir Report

Last Updated: December 5, 2025

Spaulding Lake, located in California, is a man-made reservoir with a rich history.


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Summary

It was created in the 1960s to provide water for the surrounding areas, including Sacramento, Yuba, and Placer counties. The lake is fed by the Yuba River and a series of canals and ditches. The hydrology of the lake is closely monitored to ensure a sustainable water supply. The lake relies on snowpack from the Sierra Nevada Mountains and surface water flows from the Yuba River for its water supply. The lake is used for agricultural purposes, including irrigation for crops such as rice, and also provides recreational opportunities such as boating and fishing. The lake and its surrounding areas are home to a variety of wildlife, including bald eagles, ospreys, and black bears.

Reservoir Details

Storage 24hr Change 0.2%
Percent of Normal 210%
Minimum 161.0 acre-ft
2020-10-14
Maximum 74,612.0 acre-ft
2023-07-08
Average 35,268 acre-ft
Nid_Height 42
Hydraulic_Height 39.5
Year_Completed 1916
Dam_Height 42
Structural_Height 41
River_Or_Stream South Yuba River
Primary_Dam_Type Concrete
Surface_Area 698
Hazard_Potential High
Outlet_Gates Tainter (radial) - 10
Nid_Storage 74773
Dam_Length 309
       
Seasonal Comparison
Storage Levels
Pool Elevation Levels
Top Conserv Storage Levels
Inflow Levels

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.