Montoyas Arroyo Sportsplex Dam Reservoir Report
Last Updated: December 21, 2025
Montoyas Arroyo Sportsplex Dam, located in Rio Rancho, New Mexico, is a local government-owned structure designed by Bohannon Huston, Inc.
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Summary
The dam, completed in 2007, serves the primary purpose of flood risk reduction along the Arroyo de los Montoyas stream. Standing at a height of 25.9 feet and with a length of 1200 feet, the dam has a storage capacity of 316 acre-feet and a maximum discharge of 102,500 cubic feet per second.
The dam features an uncontrolled spillway with a width of 1040 feet, and it is regulated and inspected by the Office of the State Engineer in New Mexico. With a hazard potential rated as high and a satisfactory condition assessment as of December 2018, the dam poses moderate risk (3) according to the risk assessment. The structure has not been modified in recent years and has no associated locks. Despite having no normal storage capacity, the dam plays a crucial role in mitigating flood risks in the area and ensuring the safety of surrounding communities.
Water resource and climate enthusiasts interested in the management and regulation of dams will find Montoyas Arroyo Sportsplex Dam an intriguing subject. Its strategic location, design specifications, and regulatory oversight by the state of New Mexico make it a noteworthy example of flood risk reduction infrastructure. The dam's high hazard potential underscores the importance of regular inspections and maintenance to uphold its functionality and safeguard against potential emergencies.
Year Completed |
2007 |
Dam Length |
1200 |
Dam Height |
25.9 |
River Or Stream |
ARROYO DE LOS MONTOYAS |
Primary Dam Type |
Earth |
Surface Area |
16.6 |
Drainage Area |
50 |
Nid Storage |
316 |
Outlet Gates |
Uncontrolled - 0 |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
26 |
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.
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