Jones Lake Dam
Jones Lake Dam is an earth dam located in Kent County, Maryland, built in 1930. It carries a Low hazard potential classification and has a poor condition assessment.
About Jones Lake Dam
The primary purpose of Jones Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Jones Lake Corporation (private). It impounds the Andover Sewell Branch near Millington.
The dam stands 13 feet tall and stretches 1,180 feet across, creates a reservoir covering 35 acres, has a maximum storage capacity of 77 acre-feet, and collects water from a drainage area of 43 square miles. Completed in 1930, the structure is well-established, with more than 75 years of service.
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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 11/13/2024.
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Location
| State | Maryland |
| County | Kent |
| Nearest City | Millington |
| River/Stream | Andover Sewell Branch |
| Coordinates | 39.24690, -75.81840 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 13 ft |
| Dam Height | 13 ft |
| Dam Length | 1,180 ft |
| Year Completed | 1930 (96 years old) |
Storage & Hydraulics
| NID Storage | 77 acre-ft |
| Max Storage | 77 acre-ft |
| Normal Storage | 33 acre-ft |
| Surface Area | 35 acres |
| Drainage Area | 43 sq mi |
| Max Discharge | 1,273 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Jones Lake Corporation |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 11/13/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | MD00170 |
| Federal ID | MD00170 |
| More Info | State Dam Safety Program |