Essex No. 19
Essex No. 19 is a concrete dam located in Chittenden County, Vermont, built in 1917. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Essex No. 19
The primary purpose of Essex No. 19 is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Green Mountain Power Corporation (public utility). It impounds the Winooski River near Burlington.
The dam stands 53 feet tall and stretches 475 feet across, creates a reservoir covering 352 acres, has a maximum storage capacity of 1,950 acre-feet, and collects water from a drainage area of 1,043 square miles. Completed in 1917, 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 05/18/2022.
At 53 feet, this dam is taller than 94% of dams nationwide.
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Location
| State | Vermont |
| County | Chittenden |
| Nearest City | Burlington |
| River/Stream | Winooski River |
| Coordinates | 44.48220, -73.11480 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 53 ft |
| Dam Height | 53 ft |
| Dam Length | 475 ft |
| Year Completed | 1917 (109 years old) |
Storage & Hydraulics
| NID Storage | 1,950 acre-ft |
| Max Storage | 1,950 acre-ft |
| Normal Storage | 1,950 acre-ft |
| Surface Area | 352 acres |
| Drainage Area | 1,043 sq mi |
| Max Discharge | 75,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Green Mountain Power Corporation |
| Owner Type | Public Utility |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/18/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | VT00045 |
| Federal ID | VT00045 |
| More Info | State Dam Safety Program |