Altus North Dike Reservoir Report
Nearby: Altus Altus Lugert Dike
Last Updated: January 11, 2026
Altus North Dike, located in Blair, Oklahoma, is a gravity dam on the North Fork Red River with a primary purpose of irrigation.
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Summary
Completed in 1945, this Federal-owned structure stands at a height of 30 feet and has a hydraulic height of 23 feet. With a maximum storage capacity of 168,120 acre-feet and a normal storage of 134,550 acre-feet, Altus North Dike covers a surface area of 6,260 acres and serves a drainage area of 2,515 square miles.
The dam features a controlled spillway with a width of 4 feet and an outlet gate consisting of a single valve. Despite being classified with a high hazard potential, Altus North Dike is currently rated as "Not Rated" in terms of condition assessment. With a very high risk assessment level of 1, this structure has not been inspected since June 1992. While the Emergency Action Plan (EAP) status is unknown, it is important for water resource and climate enthusiasts to keep a close eye on the maintenance and safety of Altus North Dike to ensure the protection of surrounding areas and communities in the event of a potential emergency.
Overall, Altus North Dike serves as a crucial irrigation resource in the region, but its high hazard potential and risk assessment highlight the importance of regular inspections and maintenance to ensure the safety and security of the dam and its surrounding areas. Water resource and climate enthusiasts should stay informed about any updates or developments regarding Altus North Dike to contribute to its continued functionality and protection.
Year Completed |
1945 |
Dam Length |
935 |
Dam Height |
30 |
River Or Stream |
NORTH FORK RED RIVER |
Primary Dam Type |
Gravity |
Surface Area |
6260 |
Hydraulic Height |
23 |
Drainage Area |
2515 |
Nid Storage |
168120 |
Structural Height |
45 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
High |
Nid Height |
45 |
Seasonal Comparison
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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.
Altus North Dike
Lake Altus At Lugert