Imlaystown Lake Dam
Imlaystown Lake Dam is an earth dam located in Monmouth County, New Jersey, built in 1925. It carries a Significant hazard potential classification and has a poor condition assessment.
About Imlaystown Lake Dam
The primary purpose of Imlaystown Lake Dam is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Division Of Fish & Wildlife (state). It impounds the Doctors Creek.
The dam stands 20 feet tall and stretches 350 feet across, creates a reservoir covering 18 acres, has a storage capacity of 36 acre-feet, and collects water from a drainage area of 8 square miles. Completed in 1925, the structure is over a century 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 10/23/2024.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | New Jersey |
| County | Monmouth |
| River/Stream | Doctors Creek |
| Coordinates | 40.16440, -74.51360 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 350 ft |
| Year Completed | 1925 (101 years old) |
Storage & Hydraulics
| NID Storage | 36 acre-ft |
| Normal Storage | 36 acre-ft |
| Surface Area | 18 acres |
| Drainage Area | 8 sq mi |
| Max Discharge | 208 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Division of Fish & Wildlife |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 10/23/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00218 |
| Federal ID | NJ00218 |
| More Info | State Dam Safety Program |