Teatown Lake Dam is an earth dam located in Westchester County, New York, built in 1928. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 10 ft10 ft tall and 203 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 Teatown Lake Dam
Teatown Lake Dam is a dam in Westchester, New York. The dam is owned by Teatown Lake Reservation (private). It impounds the Bailey Brook.
The dam stands 10 feet tall and stretches 203 feet across, creates a reservoir covering 38 acres, has a maximum storage capacity of 160 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1928, the structure is well-established, with more than 75 years of service.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 02/18/2022.
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Location
| State | New York |
| County | Westchester |
| Nearest City | None |
| River/Stream | Bailey Brook |
| Coordinates | 41.21472, -73.83306 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 203 ft |
| Year Completed | 1928 (98 years old) |
Storage & Hydraulics
| NID Storage | 160 acre-ft |
| Max Storage | 160 acre-ft |
| Normal Storage | 115 acre-ft |
| Surface Area | 38 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 150 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | Teatown Lake Reservation |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 02/18/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY01333 |
| Federal ID | NY01333 |
| More Info | State Dam Safety Program |