Salt Springs Reservoir Report

Last Updated: December 5, 2025

Salt Springs is located in the northern California town of Montague.


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Summary

The area's hydrology is characterized by a unique combination of thermal springs, which are heated by geothermal activity, and cold springs, which originate from snowmelt and rainwater. These springs are a source of water for irrigation and drinking, with the largest surface flow coming from the Shasta River. The snowpack providers in the area include the Marble Mountains and the Klamath Mountains. Salt Springs has a rich history, with Native Americans using the area for ceremonial purposes for centuries. During the gold rush in the mid-1800s, the area became a popular destination for miners seeking relief from the hot climate. Today, the springs are used for both agricultural and recreational purposes, with many visitors coming to enjoy the natural beauty and therapeutic benefits of the warm water.

Reservoir Details

Storage 24hr Change -0.44%
Percent of Normal 293%
Minimum 4,772.0 acre-ft
2023-12-07
Maximum 142,136.0 acre-ft
2011-07-18
Average 40,358 acre-ft
Nid_Height 328
Hydraulic_Height 235.7
Primary_Dam_Type Rockfill
Drainage_Area 169
Year_Completed 1931
Dam_Height 328
Hazard_Potential High
Structural_Height 328
River_Or_Stream North Fork Mokelumne River
Surface_Area 963
Outlet_Gates Other Controlled - 1, Tainter (radial) - 12
Nid_Storage 142000
Dam_Length 1945
       
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.