Mountain Lake Dam is an earth dam located in Delaware County, New York, built in 1930. It carries a Low hazard potential classification.
Dam profile
NID height · 15 ft15 ft tall and 500 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 Mountain Lake Dam
The primary purpose of Mountain Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by F & N Realty Inc (private). It impounds the Tr-big Pond near Lewbeach.
The dam stands 15 feet tall and stretches 500 feet across, creates a reservoir covering 19 acres, and has a maximum storage capacity of 118 acre-feet. Completed in 1930, 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. The most recent inspection on record was 07/09/1996. That was over 30 years ago.
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Location
| State | New York |
| County | Delaware |
| Nearest City | Lewbeach |
| River/Stream | Tr-big Pond |
| Coordinates | 42.05778, -74.72444 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 500 ft |
| Year Completed | 1930 (96 years old) |
Storage & Hydraulics
| NID Storage | 118 acre-ft |
| Max Storage | 118 acre-ft |
| Normal Storage | 80 acre-ft |
| Surface Area | 19 acres |
| Max Discharge | 240 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | F & N Realty Inc |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 07/09/1996 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NY01327 |
| Federal ID | NY01327 |
| More Info | State Dam Safety Program |