Hansen Recreational Lake Reservoir Report

Last Updated: December 5, 2025

Hansen Recreational Lake, located in Los Angeles, California, is a local government-owned water resource that serves multiple purposes including water supply and recreation.


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Summary

The earth dam, completed in 1999, stands at a height of 50 feet and has a storage capacity of 85 acre-feet. The lake covers an area of 11 acres and is regulated by the Department of Water Resources (DWR) and Safety of Dams agency, ensuring its safety and compliance with state regulations.

With a low hazard potential and a satisfactory condition assessment as of September 2017, Hansen Recreational Lake offers a safe and enjoyable environment for water enthusiasts. The dam's primary purpose of water supply is complemented by recreational activities, making it a versatile resource for the community. Its location offstream and distance from any major river or stream adds to its appeal as a serene destination for outdoor adventures.

Visitors to Hansen Recreational Lake can appreciate the careful construction and maintenance of the dam, as evidenced by regular inspections and a solid emergency action plan. With its picturesque setting and commitment to safety, this hidden gem in the heart of Los Angeles provides a valuable water source and a peaceful escape for climate and water resource enthusiasts alike.

Year Completed

1999

Dam Length

3600

Dam Height

50

River Or Stream

Offstream

Primary Dam Type

Earth

Surface Area

11

Hydraulic Height

47

Nid Storage

85

Hazard Potential

Low

Nid Height

50
       
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.