Hemlock Lake Dam is an earth dam located in Westchester County, New York. It carries a Low hazard potential classification.
Dam profile
NID height · 8 ft8 ft tall and 110 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 Hemlock Lake Dam
The primary purpose of Hemlock Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. It impounds the Crook Brook Tributary.
The dam stands 8 feet tall and stretches 110 feet across, creates a reservoir covering 11 acres, has a maximum storage capacity of 53 acre-feet, and collects water from a drainage area of 138 square miles.
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 10/18/2021.
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Location
| State | New York |
| County | Westchester |
| River/Stream | Crook Brook Tributary |
| Coordinates | 41.31003, -73.56278 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 8 ft |
| Dam Height | 8 ft |
| Dam Length | 110 ft |
Storage & Hydraulics
| NID Storage | 53 acre-ft |
| Max Storage | 53 acre-ft |
| Normal Storage | 23 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 138 sq mi |
| Max Discharge | 213 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner Type | Not Listed |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/18/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NY17087 |
| Federal ID | NY17087 |
| More Info | State Dam Safety Program |