Farmington Lake Dam Reservoir Report

Last Updated: December 27, 2025

Farmington Lake Dam, also known as Beeline Dam, is a vital water resource structure located in Farmington, New Mexico.


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Summary

Built in 1964, this earth dam stands at a height of 117 feet and stretches 1075 feet in length, providing essential water supply for the region. With a normal storage capacity of 6703 acre-feet and a maximum storage of 8470 acre-feet, the dam plays a crucial role in managing water resources for the community.

Managed by the local government and regulated by the Office of the State Engineer, Farmington Lake Dam has a high hazard potential but is currently assessed to be in fair condition. The dam's spillway, with a width of 120 feet, is uncontrolled, and the structure is designed to handle a maximum discharge of 1500 cubic feet per second. Despite its risk level being categorized as moderate, the dam meets regulatory guidelines and undergoes regular inspections to ensure its safety and functionality.

Situated on the Animas River-OS, Farmington Lake Dam serves as a key infrastructure for water supply in the San Juan County area. With its strategic location and vital role in water resource management, this dam continues to be a significant asset for the community, highlighting the importance of sustainable water infrastructure in the face of changing climate conditions.

Year Completed

1964

Dam Length

1075

Dam Height

117

River Or Stream

ANIMAS RIVER-OS

Primary Dam Type

Earth

Surface Area

198

Drainage Area

3.11

Nid Storage

8470

Outlet Gates

Valve - 0

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

117
       
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.