Green Mountain Lake Dam
Green Mountain Lake Dam is a masonry dam located in Dutchess County, New York. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Green Mountain Lake Dam
The primary purpose of Green Mountain Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Town Of Pawling (local government). It impounds the Swamp River near Pawling.
The dam stands 17 feet tall and stretches 110 feet across, creates a reservoir covering 32 acres, has a maximum storage capacity of 204 acre-feet, and collects water from a drainage area of 1 square miles.
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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 09/30/2021.
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Location
| State | New York |
| County | Dutchess |
| Nearest City | Pawling |
| River/Stream | Swamp River |
| Coordinates | 41.57431, -73.60731 |
Physical Characteristics
| Dam Type | Masonry |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 110 ft |
Storage & Hydraulics
| NID Storage | 204 acre-ft |
| Max Storage | 204 acre-ft |
| Normal Storage | 204 acre-ft |
| Surface Area | 32 acres |
| Drainage Area | 1 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | TOWN OF PAWLING |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/30/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY01235 |
| Federal ID | NY01235 |
| More Info | State Dam Safety Program |