Lake La Su An Dam
Lake La Su An Dam is an earth dam located in Williams County, Ohio, built in 1959. It carries a Significant hazard potential classification and has a fair condition assessment.
About Lake La Su An Dam
The primary purpose of Lake La Su An Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Odnr, Division Of Wildlife (state). It impounds the Tributary To West Branch St. Joseph River near Bridgewater Center.
The dam stands 19 feet tall and stretches 600 feet across, creates a reservoir covering 69 acres, has a maximum storage capacity of 750 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1959, 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 05/31/2023.
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Location
| State | Ohio |
| County | Williams |
| Nearest City | Bridgewater Center |
| River/Stream | Tributary To West Branch St. Joseph River |
| Coordinates | 41.68806, -84.68972 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 19 ft |
| Dam Height | 19 ft |
| Dam Length | 600 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 750 acre-ft |
| Max Storage | 750 acre-ft |
| Normal Storage | 555 acre-ft |
| Surface Area | 69 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 317 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | ODNR, Division of Wildlife |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 05/31/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OH00381 |
| Federal ID | OH00381 |
| More Info | State Dam Safety Program |