Glass Lake Dam
Glass Lake Dam is an earth dam located in Rensselaer County, New York, built in 1916. It carries a Significant hazard potential classification and has a fair condition assessment.
About Glass Lake Dam
The primary purpose of Glass Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Glass Lake Preservation Corporation (private). It impounds the Wynantskill near Sand Lake.
The dam stands 18 feet tall and stretches 50 feet across, creates a reservoir covering 108 acres, has a maximum storage capacity of 3,630 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1916, the structure is over a century 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. 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 01/03/2023.
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Location
| State | New York |
| County | Rensselaer |
| Nearest City | Sand Lake |
| River/Stream | Wynantskill |
| Coordinates | 42.62917, -73.53333 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 50 ft |
| Year Completed | 1916 (110 years old) |
Storage & Hydraulics
| NID Storage | 3,630 acre-ft |
| Max Storage | 3,630 acre-ft |
| Normal Storage | 3,630 acre-ft |
| Surface Area | 108 acres |
| Drainage Area | 3 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | GLASS LAKE PRESERVATION CORPORATION |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 01/03/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY00077 |
| Federal ID | NY00077 |
| More Info | State Dam Safety Program |