Miller Reservoir Report

Last Updated: December 5, 2025

Located in Yuba, California, the Miller Dam, also known as Miller Lake, serves as a crucial structure to mitigate flood risks along the Reed Creek.


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Summary

Constructed in 1955 by the USAF, this rockfill dam stands at 26 feet in height and spans 1300 feet in length, with a storage capacity of 500 acre-feet. While primarily designed for flood risk reduction, the dam also provides recreational opportunities for the local community.

Managed and funded by the US Air Force, the Miller Dam boasts a low hazard potential and a moderate risk assessment rating. Although its condition assessment is currently unavailable, regular inspections are conducted every five years to ensure its structural integrity. Despite being uncontrolled, the spillway and outlet gates function efficiently to manage potential overflow during periods of heavy rainfall.

With its strategic location at BEALE AFB and close proximity to Mount Diablo, the Miller Dam plays a vital role in maintaining the safety and security of the surrounding area. As climate change continues to impact water resources, this structure stands as a testament to the importance of proper infrastructure in safeguarding communities against natural disasters.

Year Completed

1955

Dam Length

1300

Dam Height

25

River Or Stream

REEDS CREEK

Primary Dam Type

Rockfill

Surface Area

580

Hydraulic Height

18

Drainage Area

3.44

Nid Storage

500

Structural Height

26

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

26
       
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.