10 Mg Walteria Reservoir Report

Last Updated: December 4, 2025

Located in Torrance, California, 10 Mg Walteria is a crucial offstream dam designed for water supply purposes.


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Summary

With a dam height of 40 feet and a hydraulic height of 38 feet, this structure provides a maximum storage capacity of 31 acre-feet, ensuring a reliable water source for the surrounding area. Completed in 1953, this dam is under state regulation, with inspections and enforcement measures in place to ensure its safety and functionality.

Despite its satisfactory condition assessment, 10 Mg Walteria has a high hazard potential, highlighting the importance of regular inspections and risk management measures. The dam's last inspection in October 2020 revealed no major concerns, but it is essential for the local government, the primary owner of the dam, to stay vigilant and prepared for any potential emergencies. With its location in Congressional District 33, this dam serves as a critical piece of infrastructure in ensuring water security for the residents of Torrance and beyond.

As water resource and climate enthusiasts, the data for 10 Mg Walteria provides valuable insights into the infrastructure that supports water supply in California. With its long history of service and ongoing state regulation, this dam exemplifies the importance of proactive maintenance and risk assessment in safeguarding water resources. By understanding the details of structures like 10 Mg Walteria, enthusiasts can appreciate the complexity and significance of the systems that sustain our water supply in the face of changing climate conditions.

Year Completed

1953

Dam Length

1022

Dam Height

40

River Or Stream

Offstream

Primary Dam Type

Other

Surface Area

1

Hydraulic Height

38

Nid Storage

31

Hazard Potential

High

Nid Height

40
       
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.