San Juan South Pond 1 Reservoir Report
Last Updated: December 19, 2025
San Juan South Pond 1 is a crucial water resource located in San Juan, New Mexico, specifically in the city of Waterflow.
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Summary
This public utility structure was completed in 1982 and serves as a water management system for the surrounding area. With a dam height of 33 feet and a maximum storage capacity of 238 acre-feet, this earth dam plays a significant role in regulating water flow along the San Juan River.
Despite its importance, San Juan South Pond 1 is currently assessed to be in poor condition, with a significant hazard potential. The last inspection in May 2019 highlighted the need for improvement and raised concerns about the structure's ability to withstand potential risks. The dam lacks a spillway and has limited outlet gates, factors that contribute to its high risk assessment level.
As water resource and climate enthusiasts, it is crucial to monitor the condition of San Juan South Pond 1 and advocate for necessary maintenance and upgrades to ensure its continued functionality and safety. With the potential for significant hazards and a high risk assessment, proactive measures must be taken to mitigate risks and protect the surrounding community and environment from potential disasters.
Year Completed |
1982 |
Dam Length |
5082 |
Dam Height |
33 |
River Or Stream |
SAN JUAN RIVER - OS |
Primary Dam Type |
Earth |
Surface Area |
14.01 |
Hydraulic Height |
17 |
Nid Storage |
238 |
Hazard Potential |
Significant |
Foundations |
Unlisted/Unknown |
Nid Height |
33 |
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 South Pond 1