Silver Lake Dam is a stone dam located in Sullivan County, New York, built in 1850. It carries a Significant hazard potential classification.
Dam profile
NID height · 14 ft14 ft tall and 176 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic rockfill embankment section and the water level is illustrative.
About Silver Lake Dam
The primary purpose of Silver Lake Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Village of Woodridge (local government). It impounds the Sundburg Creek near Mountain Dale.
The dam stands 14 feet tall and stretches 176 feet across, creates a reservoir covering 83 acres, has a maximum storage capacity of 280 acre-feet, and collects water from a drainage area of 42 square miles. Completed in 1850, 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. An emergency action plan is in place for this dam. The most recent inspection on record was 10/26/2022.
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Location
| State | New York |
| County | Sullivan |
| Nearest City | Mountain Dale |
| River/Stream | Sundburg Creek |
| Coordinates | 41.70139, -74.55083 |
Physical Characteristics
| Dam Type | Stone |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 176 ft |
| Year Completed | 1850 (176 years old) |
Storage & Hydraulics
| NID Storage | 280 acre-ft |
| Max Storage | 280 acre-ft |
| Normal Storage | 280 acre-ft |
| Surface Area | 83 acres |
| Drainage Area | 42 sq mi |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Village of Woodridge |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 10/26/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY00989 |
| Federal ID | NY00989 |
| More Info | State Dam Safety Program |