Winnekenni Basin Dam
Winnekenni Basin Dam is an earth dam located in Essex County, Massachusetts, built in 1970. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Winnekenni Basin Dam
The primary purpose of Winnekenni Basin Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by City Of Haverhill (local government). It impounds the Tributary Of Merrimack River near Haverhill.
The dam stands 10 feet tall and stretches 120 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 75 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 11/03/2014. That was over 11 years ago.
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Location
| State | Massachusetts |
| County | Essex |
| Nearest City | Haverhill |
| River/Stream | Tributary Of Merrimack River |
| Coordinates | 42.79026, -71.06556 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Length | 120 ft |
| Year Completed | 1970 (56 years old) |
Storage & Hydraulics
| NID Storage | 75 acre-ft |
| Max Storage | 75 acre-ft |
| Normal Storage | 55 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City of Haverhill |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/03/2014 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MA01197 |
| Federal ID | MA01197 |
| More Info | State Dam Safety Program |