Sycamore Reservoir Reservoir Report

Last Updated: December 5, 2025

Sycamore Reservoir, also known as Dam #11, is a captivating water resource nestled in the scenic city of Bradley, California.


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Summary

This Federal-owned reservoir, managed by the US Army, was completed in 1961 and serves as a vital water supply for the surrounding area. With a primary purpose of water supply and secondary purpose of recreation, Sycamore Reservoir offers a serene retreat for water and climate enthusiasts alike.

Situated along the Nacimiento River, Sycamore Reservoir boasts a dam height of 25 feet and a storage capacity of 35 acre-feet, providing a reliable source of water for the region. The reservoir's low hazard potential and moderate risk assessment make it a secure and sustainable water resource. Its uncontrolled spillway and earth core dam type further highlight its functionality and resilience in managing water flow and storage efficiently.

With a surface area of 3 acres and a structural height of 25 feet, Sycamore Reservoir is not only a practical water supply infrastructure but also a picturesque spot for recreational activities. Whether for water supply management or leisurely pursuits, this reservoir stands as a testament to sustainable water resource development and serves as a beacon for those passionate about water conservation and climate resilience.

Year Completed

1961

Dam Length

296

Dam Height

25

River Or Stream

Nacimiento River

Primary Dam Type

Earth

Surface Area

3

Hydraulic Height

21

Nid Storage

35

Structural Height

25

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

25
       
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.