Friant Millerton Road Embankment A Reservoir Report

Last Updated: December 5, 2025

The Friant Millerton Road Embankment A is a key infrastructure project designed for flood risk reduction along the San Joaquin River in Fresno, California.


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Summary

Completed in 1941, this earth dam stands at a height of 13 feet and spans 350 feet in length, with a primary purpose of flood risk reduction and irrigation. Managed by the Bureau of Reclamation, the dam has a storage capacity of 555,500 acre-feet and serves as a vital component of water resource management in the region.

With a high hazard potential and a risk assessment rating of 2, the Friant Millerton Road Embankment A is closely monitored by the Bureau of Reclamation to ensure its structural integrity and safety. While the condition assessment is currently not available, regular inspections are conducted to mitigate any potential risks or issues. Emergency action plans are in place, although the last review was in 2017, reflecting the importance of proactive measures in safeguarding the surrounding communities and water resources.

The presence of the Friant Millerton Road Embankment A highlights the critical role of infrastructure in managing water resources and climate-related risks. As climate change continues to impact the frequency and intensity of extreme weather events, the maintenance and enhancement of such structures are essential for ensuring the resilience of communities and ecosystems in the face of evolving environmental challenges.

Year Completed

1941

Dam Length

350

Dam Height

13

River Or Stream

SAN JOAQUIN RIVER OS

Primary Dam Type

Earth

Surface Area

4900

Hydraulic Height

6

Drainage Area

1633

Nid Storage

555500

Structural Height

13

Hazard Potential

High

Foundations

Rock

Nid Height

13
       
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.