San Juan Power Generation Dam Reservoir Report
Last Updated: December 19, 2025
Located in Waterflow, New Mexico, the San Juan Power Generation Dam stands as a pivotal structure along the San Juan River.
°F
°F
mph
Wind
%
Humidity
Summary
Constructed in 1972, this earth type dam reaches a height of 104 feet and stretches across 1760 feet, providing critical water storage of up to 3285 acre-feet. The dam's primary purpose goes beyond power generation, serving as a key component in water resource management for the region.
Managed by the Office of the State Engineer, the dam is regulated, inspected, and enforced by state authorities, ensuring its structural integrity and operational efficiency. Despite its high hazard potential, the dam has been assessed as satisfactory in condition, with a moderate risk rating. With a spillway width of 7 feet and a maximum discharge capacity of 930 cubic feet per second, the San Juan Power Generation Dam plays a crucial role in flood control and water supply management for the area.
As a captivating site for water resource and climate enthusiasts, the San Juan Power Generation Dam offers a glimpse into the intersection of infrastructure, environmental stewardship, and sustainable energy production. Its strategic location, significant storage capacity, and vital role in water management highlight the importance of dams in mitigating risks, ensuring water security, and supporting the region's overall resilience in the face of changing climate patterns.
Year Completed |
1972 |
Dam Length |
1760 |
Dam Height |
76 |
River Or Stream |
SAN JUAN RIVER - OS |
Primary Dam Type |
Earth |
Surface Area |
107 |
Drainage Area |
1.81 |
Nid Storage |
3285 |
Structural Height |
104 |
Outlet Gates |
Valve - 0 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
104 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
San Juan Power Generation Dam