Ashland Sewage Lagoon Dam
Ashland Sewage Lagoon Dam is an earth dam located in Grafton County, New Hampshire, built in 1968. It carries a Significant hazard potential classification and has a fair condition assessment.
About Ashland Sewage Lagoon Dam
Ashland Sewage Lagoon Dam is a dam in Grafton, New Hampshire. The dam is owned by Town Of Ashland (local government). It impounds the Na near Ashland.
The dam stands 15 feet tall and stretches 600 feet across, creates a reservoir covering 3 acres, and has a maximum storage capacity of 35 acre-feet. Completed in 1968, the structure is well into its service life at over 50 years old.
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 09/19/2019.
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Location
| State | New Hampshire |
| County | Grafton |
| Nearest City | Ashland |
| River/Stream | Na |
| Coordinates | 43.68660, -71.64470 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 600 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 35 acre-ft |
| Max Storage | 35 acre-ft |
| Normal Storage | 15 acre-ft |
| Surface Area | 3 acres |
Ownership & Safety
| Purpose | Other |
| Owner | TOWN OF ASHLAND |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 09/19/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH00612 |
| Federal ID | NH00612 |
| More Info | State Dam Safety Program |