Flowers Reservoir Report

Last Updated: December 5, 2025

Flowers is a private dam located in Oakdale, California, on Little Johns Creek.


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Summary

Completed in 1957, this earth dam stands at a height of 41 feet and has a storage capacity of 724 acre-feet, primarily serving the purpose of water supply for irrigation and other uses. The dam is regulated by the California Department of Water Resources and undergoes regular inspections to ensure its safety and compliance with state regulations.

With a significant hazard potential, Flowers has been assessed as being in satisfactory condition as of September 2017. The dam has a spillway type and width information is not provided, and its inspection frequency is once per year. The last inspection took place in March 2021, demonstrating a commitment to monitoring its structural integrity and readiness for emergencies. It is important for water resource and climate enthusiasts to be aware of Flowers' role in providing water supply and the measures in place to mitigate potential risks associated with its operation.

Flowers' location in Calaveras County, California, underscores its importance in water management for the region. The dam's association with irrigation and water supply highlights its crucial role in supporting agriculture and local communities. As climate change continues to impact water resources, understanding and monitoring structures like Flowers is essential for ensuring sustainable water management practices in the face of evolving environmental challenges.

Year Completed

1957

Dam Length

712

Dam Height

41

River Or Stream

Little Johns Cr

Primary Dam Type

Earth

Surface Area

57

Hydraulic Height

34

Drainage Area

13.1

Nid Storage

724

Hazard Potential

Significant

Nid Height

41
       
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.