Ione Canal Reservoir Report

Last Updated: December 5, 2025

The Ione Canal in California serves as a vital infrastructure for flood risk reduction and water supply in the region.


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Summary

Built in 1962, this earth dam stands at a height of 48 feet and has a storage capacity of 24 acre-feet. Located in the city of Ione, the canal covers a surface area of 2 acres and has a drainage area of 0.03 square miles.

Managed by the local government, the Ione Canal is regulated and inspected by the California Department of Water Resources (DWR) for safety and compliance. Despite being classified as low hazard potential, the dam's condition is assessed as satisfactory, with the last inspection conducted in January 2020. With a primary purpose of flood risk reduction, the canal plays a crucial role in mitigating potential disasters and ensuring water supply for the surrounding area.

As a key piece of infrastructure in the region, the Ione Canal not only provides flood control and water supply but also contributes to the overall resilience of the community. With its strategic location and design, this earth dam stands as a testament to effective water resource management and climate adaptation efforts in California.

Year Completed

1962

Dam Length

270

Dam Height

48

River Or Stream

Ione Canal

Primary Dam Type

Earth

Surface Area

2

Hydraulic Height

45.5

Drainage Area

0.03

Nid Storage

24

Hazard Potential

Low

Nid Height

48
       
Seasonal Comparison

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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.