Thompson Pond Upper is an earth dam located in Bennington County, Vermont, built in 1900. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 9 ft9 ft tall and 430 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Thompson Pond Upper
The primary purpose of Thompson Pond Upper is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Verdmont Outing Club (private). It impounds the South Stream-tr near Pownal.
The dam stands 9 feet tall and stretches 430 feet across, creates a reservoir covering 30 acres, has a maximum storage capacity of 140 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1900, 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. The most recent inspection on record was 07/07/2015. That was over 11 years ago.
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Location
| State | Vermont |
| County | Bennington |
| Nearest City | Pownal |
| River/Stream | South Stream-tr |
| Coordinates | 42.78177, -73.18881 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 9 ft |
| Dam Height | 9 ft |
| Dam Length | 430 ft |
| Year Completed | 1900 (126 years old) |
Storage & Hydraulics
| NID Storage | 140 acre-ft |
| Max Storage | 140 acre-ft |
| Surface Area | 30 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | Verdmont Outing Club |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 07/07/2015 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | VT00221 |
| Federal ID | VT00221 |
| More Info | State Dam Safety Program |