Shugru Reservoir Report

Last Updated: December 5, 2025

Shugru is a privately owned earth dam located in Lassen, California, along the Tr Susan River.


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Summary

The dam serves multiple purposes, including flood risk reduction, irrigation, and water supply. With a height of 20 feet and a storage capacity of 195 acre-feet, Shugru plays a crucial role in managing water resources in the area. The dam is regulated by the California Department of Water Resources and is subject to regular inspections to ensure its structural integrity and safety.

Despite its low hazard potential and satisfactory condition assessment, Shugru is equipped to handle emergency situations with an established Emergency Action Plan. The dam's last inspection was conducted in October 2019, with a frequency of one inspection per year. It is reassuring to know that Shugru meets regulatory guidelines and is actively managed to mitigate any potential risks associated with its operation. Climate enthusiasts will appreciate the role Shugru plays in flood control and water management within the region.

Operated by the Natural Resources Conservation Service, Shugru stands as a testament to effective water resource management and infrastructure development. Its strategic location and design contribute to the overall environmental sustainability of the area. For water resource and climate enthusiasts, Shugru represents a harmonious balance between human intervention and natural conservation efforts, showcasing the importance of responsible dam construction and maintenance in safeguarding our precious water resources for future generations.

Dam Length

1110

Dam Height

20

River Or Stream

Tr Susan River

Primary Dam Type

Earth

Surface Area

33

Hydraulic Height

16

Drainage Area

0.62

Nid Storage

195

Hazard Potential

Low

Nid Height

20
       
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.