Hidden Lake is a masonry dam located in Windham County, Vermont, built in 1850. It carries a Low hazard potential classification.
Dam profile
NID height · 10 ft10 ft tall and 350 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 Hidden Lake
The primary purpose of Hidden Lake is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Eli George (private). It impounds the Marlboro Branch-tr near Marlboro.
The dam stands 10 feet tall and stretches 350 feet across, creates a reservoir covering 19 acres, has a maximum storage capacity of 120 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1850, the structure is one of the older dams in the region, with over a century and a half of service.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 07/30/2015. That was over 11 years ago.
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Location
| State | Vermont |
| County | Windham |
| Nearest City | Marlboro |
| River/Stream | Marlboro Branch-tr |
| Coordinates | 42.88311, -72.72043 |
Physical Characteristics
| Dam Type | Masonry |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 350 ft |
| Year Completed | 1850 (176 years old) |
Storage & Hydraulics
| NID Storage | 120 acre-ft |
| Max Storage | 120 acre-ft |
| Surface Area | 19 acres |
| Drainage Area | 1 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | Eli George |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 07/30/2015 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | VT00222 |
| Federal ID | VT00222 |
| More Info | State Dam Safety Program |