Wasserlauf Dam is an earth dam located in Sullivan County, New York, built in 1954. It carries a Low hazard potential classification.
Dam profile
NID height · 12 ft12 ft tall and 490 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 Wasserlauf Dam
The primary purpose of Wasserlauf Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by David Wasserlauf (private). It impounds the Tr-black Lake.
The dam stands 12 feet tall and stretches 490 feet across, creates a reservoir covering 13 acres, has a maximum storage capacity of 53 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1954, 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. The most recent inspection on record was 04/30/2025.
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Location
| State | New York |
| County | Sullivan |
| Nearest City | None |
| River/Stream | Tr-black Lake |
| Coordinates | 41.66000, -74.85167 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 490 ft |
| Year Completed | 1954 (72 years old) |
Storage & Hydraulics
| NID Storage | 53 acre-ft |
| Max Storage | 53 acre-ft |
| Normal Storage | 53 acre-ft |
| Surface Area | 13 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 262 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | David Wasserlauf |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 04/30/2025 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NY00992 |
| Federal ID | NY00992 |
| More Info | State Dam Safety Program |