Earlham Lake Dam
Earlham Lake Dam is an earth dam located in Johnson County, Indiana, built in 1963. It carries a Significant hazard potential classification and has a unsatisfactory condition assessment.
About Earlham Lake Dam
The primary purpose of Earlham Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Earlham Lake Estates, Inc. (private). It impounds the Tr-indian Creek near Morgantown.
The dam stands 49 feet tall and stretches 785 feet across, creates a reservoir covering 17 acres, has a maximum storage capacity of 468 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1963, 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 unsatisfactory, indicating serious safety deficiencies exist that require immediate attention or remedial action. The most recent inspection on record was 10/25/2018.
At 49 feet, this dam is taller than 92% of dams nationwide.
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Location
| State | Indiana |
| County | Johnson |
| Nearest City | Morgantown |
| River/Stream | Tr-indian Creek |
| Coordinates | 39.34999, -86.18447 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 49 ft |
| Dam Height | 49 ft |
| Dam Length | 785 ft |
| Year Completed | 1963 (63 years old) |
Storage & Hydraulics
| NID Storage | 468 acre-ft |
| Max Storage | 468 acre-ft |
| Normal Storage | 299 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 13,422 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | EARLHAM LAKE ESTATES, INC. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Unsatisfactory |
| Last Inspection | 10/25/2018 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IN00339 |
| Federal ID | IN00339 |
| More Info | State Dam Safety Program |