Halls Meadows Reservoir Report

Last Updated: December 5, 2025

Located in Modoc County, California, Halls Meadows is a privately owned dam with a primary purpose of providing water supply for irrigation and other uses.


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Summary

Built in 1941, this earth dam stands at a height of 13 feet and has a hydraulic height of 9.5 feet, with a storage capacity of 581 acre-feet. Situated on Couch Creek, this dam serves an essential role in water resource management in the area.

Despite being of low hazard potential, Halls Meadows Dam is regularly inspected, with the last assessment conducted in August 2020, yielding a satisfactory condition assessment. The California Department of Water Resources and Safety of Dams agency oversees the state-regulated dam, ensuring that it meets all safety and regulatory standards. The dam's location, with a latitude of 41.6406 and longitude of -120.3287, further underscores its significance in the region's water infrastructure.

With its modest size and vital function in water supply, Halls Meadows Dam stands as a testament to the importance of responsible water resource management in the face of climate challenges. As climate enthusiasts and water resource advocates continue to monitor and support such structures, Halls Meadows remains a key player in ensuring water security for the surrounding communities in Modoc County, California.

Year Completed

1941

Dam Length

1040

Dam Height

13

River Or Stream

Couch Creek

Primary Dam Type

Earth

Surface Area

137

Hydraulic Height

9.5

Drainage Area

1.2

Nid Storage

581

Hazard Potential

Low

Nid Height

13
       
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.