Emerson Reservoir Report

Last Updated: December 25, 2025

Emerson, also known as Emerson Lake, is a privately-owned structure located in Lassen, California.


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Summary

Managed by the state regulatory agency, the Department of Water Resources, Safety of Dams, this dam serves multiple purposes including flood risk reduction, irrigation, and water supply. With a dam height of 30 feet and a hydraulic height of 26 feet, Emerson plays a crucial role in managing water resources in the region.

Built with Earth as the primary dam type, Emerson stands at a length of 1700 feet and has a storage capacity of 418 acre-feet. Despite its high hazard potential, the dam is in satisfactory condition, as indicated by the last inspection conducted in September 2017. With a drainage area of 0.42 square miles and a surface area of 42 acres, Emerson is a key infrastructure that contributes to the overall water management system in the area.

Situated along the Tr Gold Run Creek and owned by a private entity, Emerson underscores the importance of private involvement in water resource management. With a history of successful operations and regular inspections, Emerson continues to play a vital role in mitigating flood risks and ensuring a reliable water supply for the local community.

Dam Length

1700

Dam Height

30

River Or Stream

Tr Gold Run Crk

Primary Dam Type

Earth

Surface Area

42

Hydraulic Height

26

Drainage Area

0.42

Nid Storage

418

Hazard Potential

High

Nid Height

30
       
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.
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Area Campgrounds