M C Whatmore Lake Dam
M C Whatmore Lake Dam is an earth dam located in Westchester County, New York, built in 1964. It carries a Significant hazard potential classification.
About M C Whatmore Lake Dam
The primary purpose of M C Whatmore Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Moritz, Llc (private). It impounds the Tr-crook Brook near Grant Corner.
The dam stands 17 feet tall and stretches 140 feet across, creates a reservoir covering 26 acres, has a maximum storage capacity of 208 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1964, the structure is well into its service life at over 50 years old.
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. An emergency action plan is in place for this dam. The most recent inspection on record was 03/31/2023.
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Location
| State | New York |
| County | Westchester |
| Nearest City | Grant Corner |
| River/Stream | Tr-crook Brook |
| Coordinates | 41.30833, -73.58333 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 140 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 208 acre-ft |
| Max Storage | 208 acre-ft |
| Normal Storage | 156 acre-ft |
| Surface Area | 26 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 280 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Moritz, LLC |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Last Inspection | 03/31/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY01173 |
| Federal ID | NY01173 |
| More Info | State Dam Safety Program |