Mcallen North Reservoir Reservoir Report
Last Updated: December 24, 2025
Mcallen North Reservoir, located in Hidalgo, Texas, is a vital water resource managed by the local government.
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Summary
Constructed in 2002 by MONTGOMERY WATSON HARZA, this off-channel reservoir serves a crucial role in water management and regulation in the region. With a capacity of 900 acre-feet and a surface area of 30 acres, the reservoir plays a significant role in storing and regulating water for various purposes.
The dam at Mcallen North Reservoir is an earth-type structure with a height of 30 feet and a length of 4620 feet. Despite being classified as having a fair condition assessment, it poses a high risk, indicating the importance of regular maintenance and risk management measures. The reservoir is not equipped with a spillway, but it does have one outlet gate. Its location in the Galveston District further underscores its strategic importance in water resource management in Texas.
As a key component of the local water infrastructure, Mcallen North Reservoir is subject to state regulatory oversight by the Texas Commission on Environmental Quality (TCEQ). With a designated inspection frequency of 5 years and a recent condition assessment in April 2021, efforts are being made to ensure the safety and efficiency of this essential water resource. For water resource and climate enthusiasts, the reservoir presents a fascinating case study in water management, engineering, and environmental conservation in the region.
Year Completed |
2002 |
Dam Length |
4620 |
Dam Height |
30 |
River Or Stream |
OFF-CHANNEL |
Primary Dam Type |
Earth |
Surface Area |
30 |
Hydraulic Height |
30 |
Drainage Area |
0.05 |
Nid Storage |
900 |
Structural Height |
30 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Rio Grande At Ft Ringgold
|
2110cfs |
Rio Grande Nr Brownsville
|
22cfs |
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.
Mcallen North Reservoir