Jeff Lake Dam
Jeff Lake Dam is an earth dam located in Johnson County, Indiana, built in 1955. It carries a Significant hazard potential classification and has a poor condition assessment.
About Jeff Lake Dam
The primary purpose of Jeff Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Prince's Lakes (private). It impounds the Unnamed Tributary Mud Creek.
The dam stands 22 feet tall and stretches 300 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 14 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1955, 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 06/06/2018.
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Location
| State | Indiana |
| County | Johnson |
| River/Stream | Unnamed Tributary Mud Creek |
| Coordinates | 39.35247, -86.09965 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 300 ft |
| Year Completed | 1955 (71 years old) |
Storage & Hydraulics
| NID Storage | 14 acre-ft |
| Max Storage | 14 acre-ft |
| Normal Storage | 11 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 121 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Prince's Lakes |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 06/06/2018 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IN03406 |
| Federal ID | IN03406 |
| More Info | State Dam Safety Program |