Ferrario Reservoir Report

Nearby: Hein Wallace

Last Updated: December 5, 2025

Ferrario is a privately owned earth dam located in Wallace, California, on the Tr Bear Creek.


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Summary

Built in 1955, the dam stands at a height of 25 feet and has a storage capacity of 250 acre-feet, serving primarily for irrigation and water supply purposes. With a surface area of 32 acres and a drainage area of 1.13 square miles, Ferrario plays a significant role in water resource management in the region.

Managed by the California Department of Water Resources (DWR) under the Safety of Dams program, Ferrario is inspected regularly to ensure its structural integrity and safety. The dam is classified as having a significant hazard potential, but its condition assessment in 2017 was deemed satisfactory. The last inspection in March 2021 indicated that the dam continues to meet safety standards, reflecting the diligent upkeep and monitoring efforts in place for this vital water infrastructure.

Located in the San Francisco District, Ferrario is a crucial component of the local water supply infrastructure, contributing to agricultural irrigation and domestic water needs in the area. With its strategic location and key role in water management, Ferrario serves as a testament to the importance of effective dam regulation and maintenance in ensuring water security for communities and ecosystems in California.

Year Completed

1955

Dam Length

900

Dam Height

25

River Or Stream

Tr Bear Creek

Primary Dam Type

Earth

Surface Area

32

Hydraulic Height

20.5

Drainage Area

1.13

Nid Storage

250

Hazard Potential

Significant

Nid Height

25
       
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.