Tower Hill Lake Dam is an earth dam located in Middlesex County, Connecticut, built in 1920. It carries a Low hazard potential classification.
Dam profile
NID height · 20 ft20 ft tall and 500 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 Tower Hill Lake Dam
The primary purpose of Tower Hill Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Connecticut Deep (state). It impounds the Falls River Trib near Deep River.
The dam stands 20 feet tall and stretches 500 feet across, creates a reservoir covering 30 acres, has a maximum storage capacity of 285 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1920, the structure is over a century old.
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 10/12/1988. That was over 38 years ago.
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Location
| State | Connecticut |
| County | Middlesex |
| Nearest City | Deep River |
| River/Stream | Falls River Trib |
| Coordinates | 41.35455, -72.50678 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 500 ft |
| Year Completed | 1920 (106 years old) |
Storage & Hydraulics
| NID Storage | 285 acre-ft |
| Max Storage | 285 acre-ft |
| Normal Storage | 285 acre-ft |
| Surface Area | 30 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 258 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Connecticut Deep |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/12/1988 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CT00429 |
| Federal ID | CT00429 |
| More Info | State Dam Safety Program |