Forest Lake Reservoir Report

Last Updated: December 5, 2025

Forest Lake in Pebble Beach, California, is a vital water resource managed by a public utility agency.


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Summary

With a history dating back to 1892, this offstream dam serves the primary purpose of water supply for irrigation and other uses in the area. The earth dam stands at a height of 65 feet and has a storage capacity of 352.6 acre-feet, providing essential water storage for the region.

This dam, with a hazard potential rated as high, is regularly inspected and maintained to ensure its structural integrity and safety. The last inspection in November 2020 found the condition to be satisfactory, meeting regulatory standards set by the California Department of Water Resources. Located in the picturesque Monterey County, Forest Lake plays a crucial role in managing water resources and supporting the local ecosystem, making it a focal point for water resource and climate enthusiasts interested in sustainable water management practices.

Overall, Forest Lake represents a significant piece of California's water infrastructure, contributing to water supply and irrigation needs while also emphasizing the importance of maintaining dam safety and regulatory compliance. As climate change impacts water availability and quality, understanding and managing such water resources are essential for ensuring a sustainable future for the region. Forest Lake serves as a reminder of the intricate connection between water resources, climate resilience, and environmental stewardship in the face of changing climate patterns.

Year Completed

1892

Dam Length

2365

Dam Height

65

River Or Stream

Offstream

Primary Dam Type

Earth

Surface Area

17.1

Hydraulic Height

59.1

Drainage Area

0.05

Nid Storage

352.6

Hazard Potential

High

Nid Height

65
       
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.