Myers Reservoir Report

Last Updated: December 5, 2025

Myers is a privately owned dam located in Adin, California, along the Tr Ash Creek.


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Summary

Built in 1957, this earthen dam stands at 27 feet high and has a storage capacity of 279 acre-feet, serving primarily for irrigation and water supply purposes. Despite its low hazard potential and satisfactory condition assessment, Myers is regulated by the California Department of Water Resources, with regular inspections and enforcement measures in place to ensure its safety and compliance with state regulations.

Situated in Lassen County, Myers plays a crucial role in managing water resources in the region, with a surface area of 34 acres and a drainage area of 1.6 square miles. The dam's location at S17, T38N, R 9E, MD, makes it an essential infrastructure for maintaining water supply and supporting agricultural activities in the surrounding area. Its proximity to the city of Adin and the oversight of the San Francisco District of the US Army Corps of Engineers further emphasize the significance of Myers in water management and climate resilience efforts in California.

With a focus on water supply and irrigation, Myers represents a vital piece of infrastructure in the state's water resource network. While the dam itself has not undergone significant modifications in recent years, its regular inspections, low hazard potential, and satisfactory condition assessment highlight its importance in ensuring water reliability and safety for the community. As water resource and climate enthusiasts, understanding the role of dams like Myers is essential in promoting sustainable water management practices and addressing the challenges of a changing climate.

Year Completed

1957

Dam Length

1740

Dam Height

27

River Or Stream

Tr Ash Creek

Primary Dam Type

Earth

Surface Area

34

Hydraulic Height

22.7

Drainage Area

1.6

Nid Storage

279

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.