New Waterstone Lake Dam
New Waterstone Lake Dam is an earth dam located in Hamilton County, Ohio, built in 1997. It carries a Significant hazard potential classification and has a fair condition assessment.
About New Waterstone Lake Dam
The primary purpose of New Waterstone Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Waterstone Owners Association (private). It impounds the Tributary To Polk Run near Mason.
The dam stands 19 feet tall and stretches 330 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 83 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1997, the structure is 29 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. The most recent inspection on record was 04/03/2024.
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Location
| State | Ohio |
| County | Hamilton |
| Nearest City | Mason |
| River/Stream | Tributary To Polk Run |
| Coordinates | 39.29167, -84.30361 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 19 ft |
| Dam Height | 19 ft |
| Dam Length | 330 ft |
| Year Completed | 1997 (29 years old) |
Storage & Hydraulics
| NID Storage | 83 acre-ft |
| Max Storage | 83 acre-ft |
| Normal Storage | 37 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 1,978 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Waterstone Owners Association |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 04/03/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | OH02895 |
| Federal ID | OH02895 |
| More Info | State Dam Safety Program |