Redhawk Lake Reservoir Report

Last Updated: December 5, 2025

Redhawk Lake, also known as Calaveras Reservoir, is a key water resource in California managed by a public utility.


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Summary

The reservoir, located in San Andreas, serves multiple purposes including flood risk reduction, irrigation, and water supply. With a dam height of 33 feet and a storage capacity of 2760 acre-feet, Redhawk Lake has been a critical infrastructure since its completion in 1882.

Situated on the North Fork of the Calaveras River, Redhawk Lake plays a vital role in managing water resources in the region. Its significant hazard potential is mitigated by regular inspections and a satisfactory condition assessment conducted in September 2017. The reservoir covers an area of 80 acres and has a drainage area of 2.5 square miles, making it a crucial component of the water management infrastructure in Calaveras County.

Despite its age, Redhawk Lake continues to be a reliable resource for flood control and water supply in California. With state regulation and enforcement in place, the reservoir ensures the safety and security of its surrounding communities. As climate change impacts water resources, the importance of well-maintained infrastructure like Redhawk Lake becomes increasingly apparent for sustainable water management in the region.

Year Completed

1882

Dam Length

780

Dam Height

33

River Or Stream

Nfk Calaveras Riv

Primary Dam Type

Earth

Surface Area

80

Hydraulic Height

28.1

Drainage Area

2.5

Nid Storage

2760

Hazard Potential

Significant

Nid Height

33
       
Seasonal Comparison

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.