Johnsons Pond Dam
Johnsons Pond Dam is an earth dam located in Essex County, Massachusetts, built in 1930. It carries a Significant hazard potential classification and has a fair condition assessment.
About Johnsons Pond Dam
The primary purpose of Johnsons Pond 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 Johnson Creek near Groveland.
The dam stands 9 feet tall and stretches 180 feet across, creates a reservoir covering 186 acres, has a maximum storage capacity of 1,900 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1930, the structure is well-established, with more than 75 years of service.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 05/10/2023.
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Location
| State | Massachusetts |
| County | Essex |
| Nearest City | Groveland |
| River/Stream | Tributary Of Johnson Creek |
| Coordinates | 42.73262, -71.04557 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 9 ft |
| Dam Length | 180 ft |
| Year Completed | 1930 (96 years old) |
Storage & Hydraulics
| NID Storage | 1,900 acre-ft |
| Max Storage | 1,900 acre-ft |
| Normal Storage | 810 acre-ft |
| Surface Area | 186 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 170 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City of Haverhill |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 05/10/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | MA01204 |
| Federal ID | MA01204 |
| More Info | State Dam Safety Program |