Lake Mccoy Dam
Lake Mccoy Dam is an earth dam located in Decatur County, Indiana, built in 1900. It carries a Significant hazard potential classification and has a poor condition assessment.
About Lake Mccoy Dam
The primary purpose of Lake Mccoy Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lake Mccoy Conservancy District (local government). It impounds the Cobbs Fork.
The dam stands 24 feet tall and stretches 700 feet across, creates a reservoir covering 33 acres, has a maximum storage capacity of 986 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1900, the structure is over a century old.
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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 04/29/2016.
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Location
| State | Indiana |
| County | Decatur |
| River/Stream | Cobbs Fork |
| Coordinates | 39.32156, -85.39580 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 700 ft |
| Year Completed | 1900 (126 years old) |
Storage & Hydraulics
| NID Storage | 986 acre-ft |
| Max Storage | 986 acre-ft |
| Normal Storage | 132 acre-ft |
| Surface Area | 33 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 6,400 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | LAKE MCCOY CONSERVANCY DISTRICT |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 04/29/2016 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IN00295 |
| Federal ID | IN00295 |
| More Info | State Dam Safety Program |