Lily Pond Outlet Dam is an earth dam located in Essex County, Massachusetts. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 9 ft9 ft tall and 125 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 Lily Pond Outlet Dam
The primary purpose of Lily Pond Outlet Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by City of Gloucester (local government). It impounds the Lily River near Gloucester.
The dam stands 9 feet tall and stretches 125 feet across, creates a reservoir covering 28 acres, has a maximum storage capacity of 200 acre-feet, and collects water from a drainage area of 1 square miles.
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. An emergency action plan is in place for this dam. The most recent inspection on record was 11/08/2022.
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Location
| State | Massachusetts |
| County | Essex |
| Nearest City | Gloucester |
| River/Stream | Lily River |
| Coordinates | 42.60617, -70.71348 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 9 ft |
| Dam Length | 125 ft |
Storage & Hydraulics
| NID Storage | 200 acre-ft |
| Max Storage | 200 acre-ft |
| Normal Storage | 80 acre-ft |
| Surface Area | 28 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 160 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | City of Gloucester |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 11/08/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA00157 |
| Federal ID | MA00157 |
| More Info | State Dam Safety Program |