Silt Pond Reservoir Report

Last Updated: December 5, 2025

Silt Pond in Temescal Valley, California, is a private earth dam primarily used for tailings storage with a dam height of 25 feet and a length of 800 feet.


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Summary

The pond has a storage capacity of 5 acre-feet and is regulated by the Mine Safety and Health Administration. Despite its high hazard potential, the condition assessment of Silt Pond is currently listed as "Not Available," with no recent inspection data or emergency action plan in place.

Located in Riverside County, Silt Pond poses potential risks due to its high hazard potential and lack of updated emergency preparedness measures. The dam's structure and storage capacity make it essential for water resource and climate enthusiasts to monitor its condition closely. With no information provided on the last inspection date or condition assessment, there is a need for further evaluation and potentially the development of a comprehensive risk management plan to ensure the safety and integrity of Silt Pond.

As a critical part of the local water infrastructure, Silt Pond's role in managing tailings and water storage underscores the importance of regular inspections, maintenance, and emergency preparedness planning. With its proximity to Temescal Valley and the potential impact on surrounding areas in the event of a breach or failure, stakeholders must prioritize the safety and resilience of Silt Pond to mitigate risks and protect the environment and community from potential water resource and climate-related hazards.

Dam Length

800

Dam Height

25

Primary Dam Type

Earth

Nid Storage

5

Hazard Potential

High

Nid Height

25
       
Seasonal Comparison

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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.