Hern Lake Dam is an earth dam located in Morgan County, Indiana, built in 1968. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 23 ft23 ft tall and 300 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Hern Lake Dam
The primary purpose of Hern Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Otis Eggers (private). It impounds the Tr-fall Creek near Paragon-offstream.
The dam stands 23 feet tall and stretches 300 feet across, creates a reservoir covering 4 acres, and has a maximum storage capacity of 50 acre-feet. Completed in 1968, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected 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 05/09/2000. That was over 26 years ago.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Indiana |
| County | Morgan |
| Nearest City | Paragon-offstream |
| River/Stream | Tr-fall Creek |
| Coordinates | 39.41366, -86.58413 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Height | 20 ft |
| Dam Length | 300 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 50 acre-ft |
| Max Storage | 50 acre-ft |
| Normal Storage | 32 acre-ft |
| Surface Area | 4 acres |
| Max Discharge | 17 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Otis Eggers |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 05/09/2000 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IN00685 |
| Federal ID | IN00685 |
| More Info | State Dam Safety Program |