Fly Brook Dam is an earth dam located in Ulster County, New York, built in 1933. It carries a Low hazard potential classification.
Dam profile
NID height · 25 ft25 ft tall and 300 ft long, taller than 50% of U.S. dams with a recorded height. 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 Fly Brook Dam
The primary purpose of Fly Brook Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by George Smiley & Son (private). It impounds the Fly Brook.
The dam stands 25 feet tall and stretches 300 feet across, creates a reservoir covering 34 acres, has a maximum storage capacity of 260 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1933, 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 05/20/2010. That was over 16 years ago.
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Location
| State | New York |
| County | Ulster |
| Nearest City | None |
| River/Stream | Fly Brook |
| Coordinates | 41.71667, -74.29000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 300 ft |
| Year Completed | 1933 (93 years old) |
Storage & Hydraulics
| NID Storage | 260 acre-ft |
| Max Storage | 260 acre-ft |
| Normal Storage | 210 acre-ft |
| Surface Area | 34 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 10 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | George Smiley & Son |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 05/20/2010 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NY00640 |
| Federal ID | NY00640 |
| More Info | State Dam Safety Program |