Lower Ausable Lake Dam is a masonry dam located in Essex County, New York, built in 1912. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 10 ft10 ft tall and 91 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Lower Ausable Lake Dam
The primary purpose of Lower Ausable Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Ausable Club Adirondack Mt Reserve (private). It impounds the East Branch Ausable River near Saint Huberts.
The dam stands 10 feet tall and stretches 91 feet across, creates a reservoir covering 40 acres, and has a maximum storage capacity of 819 acre-feet. Completed in 1912, 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 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 08/24/2023.
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Location
| State | New York |
| County | Essex |
| Nearest City | Saint Huberts |
| River/Stream | East Branch Ausable River |
| Coordinates | 44.11861, -73.82583 |
Physical Characteristics
| Dam Type | Masonry |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 91 ft |
| Year Completed | 1912 (114 years old) |
Storage & Hydraulics
| NID Storage | 819 acre-ft |
| Max Storage | 819 acre-ft |
| Normal Storage | 563 acre-ft |
| Surface Area | 40 acres |
| Max Discharge | 1,730 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Ausable Club Adirondack Mt Reserve |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/24/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY00221 |
| Federal ID | NY00221 |
| More Info | State Dam Safety Program |