Hickory Basin Reservoir Report

Last Updated: December 5, 2025

Hickory Basin in Ontario, California, is a local government-owned dam situated along the W Fontana Channel.


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Summary

Completed in 2001, this earth-type dam stands at a height of 19 feet and boasts a maximum storage capacity of 220 acre-feet. Its primary purpose is flood risk reduction, although it also serves for hydroelectric and other purposes. The dam covers a surface area of 15 acres and spans a length of 4600 feet, making it a significant structure in the region.

Managed by the California Department of Water Resources (DWR) under the Safety of Dams program, Hickory Basin is subject to state regulations, permitting, inspection, and enforcement. Despite being deemed to have a significant hazard potential, the dam's condition assessment in September 2017 rated it as satisfactory. Regular inspections ensure the safety and functionality of the structure, with the last inspection conducted in December 2019, highlighting its commitment to maintaining public safety and flood risk management in the region.

With its strategic location and vital role in flood risk reduction, Hickory Basin stands as a key infrastructure in San Bernardino County, California. Its effective management by local government authorities and adherence to state regulations ensure its continued operation for the benefit of the community. Enthusiasts of water resources and climate management will find Hickory Basin to be a fascinating example of infrastructure designed to mitigate flood risks and support various water-related purposes in the region.

Year Completed

2001

Dam Length

4600

Dam Height

19

River Or Stream

W Fontana Channel

Primary Dam Type

Earth

Surface Area

15

Hydraulic Height

9

Nid Storage

220

Hazard Potential

Significant

Nid Height

19
       
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.