Foothill Park Reservoir Report

Last Updated: December 5, 2025

Foothill Park, also known as Boronda Lake, is a picturesque water resource located in Menlo Park, California.


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Summary

Owned by the local government, this park serves as a vital water supply for the area while also offering recreational activities for visitors. The park features an earth dam with a height of 86 feet and a storage capacity of 67 acre-feet, completed in 1988.

The dam stands on Tr Los Trancos Creek, with a drainage area of 0.11 square miles and a surface area of 11 acres. Despite its significant hazard potential, the dam has been assessed as satisfactory in condition and undergoes regular inspections to ensure its safety. With its stunning surroundings and crucial role in water supply and recreation, Foothill Park is a must-visit destination for water resource and climate enthusiasts in Santa Clara County.

Visitors to Foothill Park can enjoy the beauty of the landscape while learning about the importance of sustainable water management. The park's dam serves as a reminder of the delicate balance between water supply needs and environmental conservation. With its close proximity to Menlo Park, Foothill Park provides a tranquil escape for nature lovers and a valuable educational resource for those interested in water resource management and climate resilience in California.

Year Completed

1988

Dam Length

600

Dam Height

86

River Or Stream

Tr Los Trancos Cr

Primary Dam Type

Earth

Surface Area

11

Hydraulic Height

76

Drainage Area

0.11

Nid Storage

67

Hazard Potential

Significant

Nid Height

86
       
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.