Lake Bonnie is an earth dam located in Caroline County, Maryland, built in 1850. It carries a Low hazard potential classification.
Dam profile
NID height · 14 ft14 ft tall and 418 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 Lake Bonnie
The primary purpose of Lake Bonnie is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Johnathon & Tammy Merson (private). It impounds the Broadway Branch near Greensboro.
The dam stands 14 feet tall and stretches 418 feet across, creates a reservoir covering 25 acres, has a maximum storage capacity of 495 acre-feet, and collects water from a drainage area of 11 square miles. Completed in 1850, the structure is one of the older dams in the region, with over a century and a half 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. The most recent inspection on record was 12/13/2018.
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Location
| State | Maryland |
| County | Caroline |
| Nearest City | Greensboro |
| River/Stream | Broadway Branch |
| Coordinates | 39.01922, -75.77606 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 418 ft |
| Year Completed | 1850 (176 years old) |
Storage & Hydraulics
| NID Storage | 495 acre-ft |
| Max Storage | 495 acre-ft |
| Normal Storage | 103 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 11 sq mi |
| Max Discharge | 2,600 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Johnathon & Tammy Merson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 12/13/2018 |
| Emergency Action Plan | No |
Identifiers
| NID ID | MD00103 |
| Federal ID | MD00103 |
| More Info | State Dam Safety Program |