Blue River Dam
Blue River Dam is an earth dam located in Bryan County, Oklahoma, built in 1979. It carries a High hazard potential classification and has a poor condition assessment.
About Blue River Dam
The primary purpose of Blue River Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Rural Water District #2 (local government). It impounds the Tr-mineral Bayou near Armstrong.
The dam stands 40 feet tall and stretches 1,370 feet across, has a maximum storage capacity of 264 acre-feet, and collects water from a drainage area of 640 square miles. Completed in 1979, the structure is 47 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 11/21/2022.
At 40 feet, this dam is taller than 87% of dams nationwide.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Oklahoma dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Oklahoma |
| County | Bryan |
| Nearest City | Armstrong |
| River/Stream | Tr-mineral Bayou |
| Coordinates | 34.05066, -96.38023 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 40 ft |
| Dam Height | 40 ft |
| Dam Length | 1,370 ft |
| Year Completed | 1979 (47 years old) |
Storage & Hydraulics
| NID Storage | 264 acre-ft |
| Max Storage | 264 acre-ft |
| Normal Storage | 237 acre-ft |
| Drainage Area | 640 sq mi |
| Max Discharge | 1,860 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | RURAL WATER DISTRICT #2 |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 11/21/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OK21346 |
| Federal ID | OK21346 |
| More Info | State Dam Safety Program |