Silver Lake Dam
Silver Lake Dam is an earth dam located in Westchester County, New York, built in 1815. It carries a Significant hazard potential classification and has a poor condition assessment.
About Silver Lake Dam
The primary purpose of Silver Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Westchester County Dept Of Parks & Recreation (local government). It impounds the W Branch Mamaroneck River near East White Plains.
The dam stands 9 feet tall and stretches 225 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 1815, the structure is one of the older dams in the region, with over a century and a half 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 02/07/2023.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | New York |
| County | Westchester |
| Nearest City | East White Plains |
| River/Stream | W Branch Mamaroneck River |
| Coordinates | 41.04278, -73.75194 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 9 ft |
| Dam Height | 9 ft |
| Dam Length | 225 ft |
| Year Completed | 1815 (211 years old) |
Storage & Hydraulics
| NID Storage | 160 acre-ft |
| Max Storage | 160 acre-ft |
| Normal Storage | 130 acre-ft |
| Surface Area | 38 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 50 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | WESTCHESTER COUNTY DEPT OF PARKS & RECREATION |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 02/07/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY00896 |
| Federal ID | NY00896 |
| More Info | State Dam Safety Program |