Jurupa Basin Reservoir Report

Last Updated: December 5, 2025

Jurupa Basin, located in Fontana, California, serves as a critical flood risk reduction infrastructure along the San Sevaine Creek.


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Summary

This earth dam, completed in 2001, stands at 29 feet high with a storage capacity of 1680 acre-feet. With a surface area of 56 acres and a length of 7000 feet, Jurupa Basin plays a vital role in safeguarding the surrounding area from potential flooding events.

Managed by local government authorities, Jurupa Basin is under state regulation, permitting, inspection, and enforcement to ensure its structural integrity and safety. The dam's hazard potential is classified as high, but its condition assessment in 2017 deemed it satisfactory. In case of emergencies, Jurupa Basin is prepared with an Emergency Action Plan, last revised in 2018, to guide response efforts and protect the community.

For water resource and climate enthusiasts, Jurupa Basin exemplifies the fusion of engineering ingenuity and environmental stewardship in mitigating flood risks and ensuring water supply reliability. As a key component of flood risk reduction infrastructure in San Bernardino County, Jurupa Basin stands as a testament to the importance of sustainable water management practices in enhancing community resilience against natural disasters.

Year Completed

2001

Dam Length

7000

Dam Height

29

River Or Stream

San Sevaine Creek

Primary Dam Type

Earth

Surface Area

56

Hydraulic Height

18

Nid Storage

1680

Hazard Potential

High

Nid Height

29
       
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.