Prettyboy Dam
High HazardFair ConditionEmergency Action Plan: Yes
Location
| State | Maryland |
| County | Baltimore |
| Nearest City | Monkton |
| River/Stream | Gunpowder Falls |
| Coordinates | 39.61960, -76.70740 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 155 ft |
| Dam Height | 155 ft |
| Dam Length | 692 ft |
| Year Completed | 1936 (90 years old) |
Storage & Hydraulics
| NID Storage | 90,100 acre-ft |
| Max Storage | 90,100 acre-ft |
| Normal Storage | 60,100 acre-ft |
| Surface Area | 1,500 acres |
| Drainage Area | 80 sq mi |
| Max Discharge | 24,500 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Gores Mill Dam |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 05/21/2024 |
| Emergency Action Plan | Yes |