Upper Gila Valley Site No. 1 Dam Reservoir Report
Last Updated: December 5, 2025
The Upper Gila Valley Site No.
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Summary
1 Dam, also known as the Northrup Canyon Floodwater Retarding Structure, is a crucial flood risk reduction infrastructure located in Grant, New Mexico. The dam was completed in 1962 by the Natural Resources Conservation Service and is owned by the Local Government. With a height of 26 feet and a hydraulic height of 25 feet, the earth-type dam stretches 517 feet in length and has a storage capacity of 107 acre-feet.
Situated on the Northrup Canyon River, the dam serves the primary purpose of flood risk reduction and debris control. Despite its importance in mitigating potential hazards, the dam is assessed to be in poor condition with a high hazard potential. The last inspection in May 2018 highlighted the need for improvements to meet safety standards. With a moderate risk assessment rating of 3, the dam requires regular inspections and potential risk management measures to ensure its effectiveness in protecting the surrounding area from flood events.
The Upper Gila Valley Site No. 1 Dam plays a vital role in safeguarding the local community from potential flooding, emphasizing the importance of ongoing maintenance and risk assessment. As a key infrastructure in the region, efforts to address its poor condition and high hazard potential are essential for ensuring the long-term safety and effectiveness of the dam in flood risk reduction. The collaboration between local government agencies and the Natural Resources Conservation Service will be crucial in implementing necessary improvements and securing the dam's integrity for the future.
Year Completed |
1962 |
Dam Length |
517 |
Dam Height |
26 |
River Or Stream |
NORTHRUP CANYON |
Primary Dam Type |
Earth |
Surface Area |
11 |
Hydraulic Height |
25 |
Drainage Area |
1.1 |
Nid Storage |
107 |
Structural Height |
36 |
Outlet Gates |
Uncontrolled - 0 |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
36 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Gila River Near Gila
|
111cfs |
Mogollon Creek Near Cliff
|
5cfs |
Gila River Near Redrock
|
75cfs |
San Francisco River Near Glenwood
|
26cfs |
Gila River Below Blue Creek
|
67cfs |
Mimbres River At Mimbres
|
2cfs |
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.
Upper Gila Valley Site No. 1 Dam