Los Verjels Reservoir Report

Last Updated: December 5, 2025

Los Verjels, also known as Lake Mildred, is a privately owned water resource in Yuba, California, with a significant historical importance dating back to its completion in 1915.


°F

°F

mph

Wind

%

Humidity

Summary

This multi-arch dam stands at a height of 56 feet and has a storage capacity of 1530 acre-feet, serving primarily for irrigation and water supply purposes. The dam is regulated and inspected by the California Department of Water Resources (DWR) for safety and operational compliance.

Located on Dry Creek, Los Verjels covers a surface area of 80 acres and has a drainage area of 49 square miles, making it a vital component of the local water supply infrastructure. Despite its age, the dam has been assessed to be in satisfactory condition, with a significant hazard potential that requires regular inspections and emergency preparedness measures. The dam's hazard potential and emergency action plans are crucial factors in ensuring the safety and reliability of the water resource for both the local community and the environment.

With its close oversight by state regulatory agencies and a satisfactory condition assessment, Los Verjels remains a key contributor to the water supply and irrigation needs of the region. Its historical significance, structural integrity, and operational efficiency make it a noteworthy site for water resource and climate enthusiasts interested in the intersection of engineering, conservation, and sustainable water management practices.

Year Completed

1915

Dam Length

310

Dam Height

56

River Or Stream

Dry Creek

Primary Dam Type

Multi-Arch

Surface Area

80

Hydraulic Height

56

Drainage Area

49

Nid Storage

1530

Hazard Potential

Significant

Nid Height

56
       
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.