Fredonia Reservoir Report

Last Updated: December 5, 2025

Located in House Lake, California, Fredonia is a private water supply dam on Tr Pine Creek with a primary purpose of providing irrigation and water supply.


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Summary

Built in 1914, this Earth type dam stands at a height of 27 feet and has a storage capacity of 300 acre-feet. The dam, with a length of 180 feet and a spillway type not specified, has a low hazard potential and is deemed to be in satisfactory condition as of the last assessment in September 2017.

Managed by the California Department of Water Resources (DWR) under the Safety of Dams program, Fredonia is subject to state regulations, inspections, and enforcement measures. The dam is located within the San Francisco District of the US Army Corps of Engineers, but is not directly operated by a federal agency. The surrounding area boasts a scenic surface area of 20 acres and a drainage area of 2 square miles, making it a valuable resource for water enthusiasts and climate activists alike.

With its historical significance dating back over a century, Fredonia serves as a vital water source for the local community while also contributing to irrigation needs in the region. The dam, situated amidst picturesque surroundings in Lassen County, California, stands as a testament to the importance of sustainable water resource management and the preservation of essential infrastructure in the face of changing climate conditions.

Year Completed

1914

Dam Length

180

Dam Height

27

River Or Stream

Tr Pine Creek

Primary Dam Type

Earth

Surface Area

20

Hydraulic Height

23.8

Drainage Area

2

Nid Storage

300

Hazard Potential

Low

Nid Height

27
       
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.