St. John Vianney Seminary Lake Dam
St. John Vianney Seminary Lake Dam is an earth dam located in Jefferson County, Ohio, built in 1942. It carries a Low hazard potential classification and has a poor condition assessment.
About St. John Vianney Seminary Lake Dam
The primary purpose of St. John Vianney Seminary Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Apostolate For Family Consecration (private). It impounds the Grassy Creek near Broadacre.
The dam stands 17 feet tall and stretches 285 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 80 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1942, the structure is well-established, with more than 75 years of service.
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 05/09/2024.
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Location
| State | Ohio |
| County | Jefferson |
| Nearest City | Broadacre |
| River/Stream | Grassy Creek |
| Coordinates | 40.38722, -80.81250 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 285 ft |
| Year Completed | 1942 (84 years old) |
Storage & Hydraulics
| NID Storage | 80 acre-ft |
| Max Storage | 80 acre-ft |
| Normal Storage | 27 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 1,573 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Apostolate for Family Consecration |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 05/09/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | OH01094 |
| Federal ID | OH01094 |
| More Info | State Dam Safety Program |