Scs-finn Creek Site-021 is an earth dam located in McClain County, Oklahoma, built in 1965. It carries a High hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 52 ft52 ft tall and 1,290 ft long, taller than 93% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Scs-finn Creek Site-021
The primary purpose of Scs-finn Creek Site-021 is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Mcclain Co Cons Dist (state). It impounds the Finn Creek near Maysville.
The dam stands 52 feet tall and stretches 1,290 feet across, creates a reservoir covering 11 acres, and has a maximum storage capacity of 371 acre-feet. Completed in 1965, the structure is well into its service life at over 50 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 11/02/2011. That was 14 years ago — unusually long for a high-hazard dam, which typically requires more frequent inspections.
At 52 feet, this dam is taller than 93% 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 | McClain |
| Nearest City | Maysville |
| River/Stream | Finn Creek |
| Coordinates | 34.98452, -97.52724 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 52 ft |
| Dam Height | 52 ft |
| Dam Length | 1,290 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 371 acre-ft |
| Max Storage | 371 acre-ft |
| Normal Storage | 76 acre-ft |
| Surface Area | 11 acres |
| Max Discharge | 1,150 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Mcclain Co Cons Dist |
| Owner Type | State |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 11/02/2011 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OK00778 |
| Federal ID | OK00778 |
| More Info | State Dam Safety Program |