Triple L Lake Dam
Triple L Lake Dam is an earth dam located in Sullivan County, New York, built in 1966. It carries a Significant hazard potential classification.
About Triple L Lake Dam
The primary purpose of Triple L Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Oliveria Farms Inc. (private). It impounds the Tr-swan Lake near White Sulphur Springs.
The dam stands 30 feet tall and stretches 730 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 74 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1966, 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. An emergency action plan is in place for this dam. The most recent inspection on record was 08/09/2023.
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Location
| State | New York |
| County | Sullivan |
| Nearest City | White Sulphur Springs |
| River/Stream | Tr-swan Lake |
| Coordinates | 41.80389, -74.81861 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 730 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 74 acre-ft |
| Max Storage | 74 acre-ft |
| Normal Storage | 46 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 200 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Oliveria Farms Inc. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Last Inspection | 08/09/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY00539 |
| Federal ID | NY00539 |
| More Info | State Dam Safety Program |