Brookhaven Addition Lake Dam
Brookhaven Addition Lake Dam is an earth dam located in Grant County, Indiana, built in 1962. It carries a Significant hazard potential classification and has a poor condition assessment.
About Brookhaven Addition Lake Dam
The primary purpose of Brookhaven Addition Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Brookhaven Lake Corporation (private). It impounds the Mississinewa.
The dam stands 18 feet tall and stretches 280 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 74 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1962, the structure is well into its service life at over 50 years 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 03/19/2020.
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Location
| State | Indiana |
| County | Grant |
| River/Stream | Mississinewa |
| Coordinates | 40.52144, -85.62053 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 280 ft |
| Year Completed | 1962 (64 years old) |
Storage & Hydraulics
| NID Storage | 74 acre-ft |
| Max Storage | 74 acre-ft |
| Normal Storage | 32 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,038 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | BROOKHAVEN LAKE CORPORATION |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 03/19/2020 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IN00758 |
| Federal ID | IN00758 |
| More Info | State Dam Safety Program |