Annandale Dam
Annandale Dam is a concrete dam located in Dutchess County, New York, built in 1846. It carries a Significant hazard potential classification and has a poor condition assessment.
About Annandale Dam
The primary purpose of Annandale Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Bard College (private). It impounds the Saw Kill near Annandale On Hudson.
The dam stands 11 feet tall and stretches 142 feet across, creates a reservoir covering 3 acres, and has a maximum storage capacity of 21 acre-feet. Completed in 1846, 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 05/01/2024.
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Location
| State | New York |
| County | Dutchess |
| Nearest City | Annandale On Hudson |
| River/Stream | Saw Kill |
| Coordinates | 42.01167, -73.90861 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 142 ft |
| Year Completed | 1846 (180 years old) |
Storage & Hydraulics
| NID Storage | 21 acre-ft |
| Max Storage | 21 acre-ft |
| Normal Storage | 10 acre-ft |
| Surface Area | 3 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | BARD COLLEGE |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 05/01/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY13409 |
| Federal ID | NY13409 |
| More Info | State Dam Safety Program |