Lake Uncas Dam
Lake Uncas Dam is an earth dam located in Sullivan County, New York, built in 1940. It carries a Low hazard potential classification.
About Lake Uncas Dam
The primary purpose of Lake Uncas Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Monastery Our Lady Of Beatitude (private). It impounds the Tr-sprague Brook near Grooville.
The dam stands 12 feet tall and stretches 240 feet across, creates a reservoir covering 32 acres, and has a maximum storage capacity of 184 acre-feet. Completed in 1940, 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 06/12/2009. That was over 16 years ago.
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Location
| State | New York |
| County | Sullivan |
| Nearest City | Grooville |
| River/Stream | Tr-sprague Brook |
| Coordinates | 41.95222, -74.77194 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 240 ft |
| Year Completed | 1940 (86 years old) |
Storage & Hydraulics
| NID Storage | 184 acre-ft |
| Max Storage | 184 acre-ft |
| Normal Storage | 120 acre-ft |
| Surface Area | 32 acres |
| Max Discharge | 55 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | MONASTERY OUR LADY OF BEATITUDE |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 06/12/2009 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NY01209 |
| Federal ID | NY01209 |
| More Info | State Dam Safety Program |