Green Verdugo Reservoir Report

Last Updated: December 5, 2025

Green Verdugo, also known as Green Verdugo Reservoir, is a significant water supply infrastructure located in Sunland, California.


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Summary

This local government-owned dam on the Tr Tujunga Wash is regulated by the California Department of Water Resources for safety and permitting. Completed in 1953, this earth dam stands at a height of 118 feet with a storage capacity of 99 acre-feet, serving the primary purpose of water supply for the region.

With a high hazard potential and satisfactory condition assessment, Green Verdugo plays a crucial role in water resource management for Los Angeles County. The dam's structural height of 112 feet and length of 452 feet demonstrate its capacity to manage flood control and water storage efficiently. Despite its age, the dam has been regularly inspected, with the last assessment conducted in February 2021, ensuring its continued safety and functionality to meet the region's water needs.

As a key component of the local water infrastructure, Green Verdugo reservoir's strategic location and design contribute to the overall water management strategy for the area. With state regulation and enforcement in place, the dam serves as a vital asset in maintaining water supply reliability and flood protection measures. Climate and water resource enthusiasts will appreciate the role Green Verdugo plays in ensuring the sustainability and resilience of the region's water supply in the face of changing environmental conditions.

Year Completed

1953

Dam Length

452

Dam Height

118

River Or Stream

Tr Tujunga Wash

Primary Dam Type

Earth

Surface Area

3

Hydraulic Height

112

Drainage Area

0.04

Nid Storage

99

Hazard Potential

High

Nid Height

118
       
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.