Henderson #1 is an earth dam located in Knox County, Maine, built in 1970. It carries a Low hazard potential classification.
Dam profile
NID height · 11 ft11 ft tall and 370 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 Henderson #1
The primary purpose of Henderson #1 is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Legrand Association (private). It impounds the Unknown.
The dam stands 11 feet tall and stretches 370 feet across, creates a reservoir covering 25 acres, has a maximum storage capacity of 230 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1970, the structure is well into its service life at over 50 years 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.
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Location
| State | Maine |
| County | Knox |
| River/Stream | Unknown |
| Coordinates | 44.22714, -69.11178 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 370 ft |
| Year Completed | 1970 (56 years old) |
Storage & Hydraulics
| NID Storage | 230 acre-ft |
| Max Storage | 230 acre-ft |
| Normal Storage | 180 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | Legrand Association |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ME96013 |
| Federal ID | ME96013 |
| More Info | State Dam Safety Program |