Mccormack Dam
Mccormack Dam is an earth dam located in Oregon County, Missouri, built in 1937. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Mccormack Dam
The primary purpose of Mccormack Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Usda Fs (federal). It impounds the Mc Cormack Hollow near Greer.
The dam stands 27 feet tall and stretches 366 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 148 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1937, the structure is well-established, with more than 75 years of service.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 12/08/2018.
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Location
| State | Missouri |
| County | Oregon |
| Nearest City | Greer |
| River/Stream | Mc Cormack Hollow |
| Coordinates | 36.81667, -91.34750 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 366 ft |
| Year Completed | 1937 (89 years old) |
Storage & Hydraulics
| NID Storage | 148 acre-ft |
| Max Storage | 148 acre-ft |
| Normal Storage | 88 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 4,000 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | USDA FS |
| Owner Type | Federal |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 12/08/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO30004 |
| Federal ID | MO30004 |
| More Info | State Dam Safety Program |