Andover Dam is a timber crib dam located in Allegany County, New York, built in 1951. It carries a Low hazard potential classification.
Dam profile
NID height · 9 ft9 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 Andover Dam
Andover Dam is a dam in Allegany, New York. The dam is owned by Town of Andover (local government). It impounds the Liberty Brook near Andover.
The dam stands 9 feet tall and stretches 370 feet across, creates a reservoir covering 25 acres, has a maximum storage capacity of 294 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1951, 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. The most recent inspection on record was 07/25/1991. That was over 35 years ago.
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Location
| State | New York |
| County | Allegany |
| Nearest City | Andover |
| River/Stream | Liberty Brook |
| Coordinates | 42.16278, -77.79333 |
Physical Characteristics
| Dam Type | Timber Crib |
| NID Height | 9 ft |
| Dam Height | 9 ft |
| Dam Length | 370 ft |
| Year Completed | 1951 (75 years old) |
Storage & Hydraulics
| NID Storage | 294 acre-ft |
| Max Storage | 294 acre-ft |
| Normal Storage | 118 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 5 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | Town of Andover |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 07/25/1991 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NY00439 |
| Federal ID | NY00439 |
| More Info | State Dam Safety Program |