Junction Industrial Park
Junction Industrial Park is an earth dam located in Howard County, Maryland, built in 1984. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Junction Industrial Park
The primary purpose of Junction Industrial Park is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Junction Limited Partnership (private). It impounds the Little Patuxent-offstream near Annapolis Junction.
The dam stands 18 feet tall and stretches 603 feet across, has a maximum storage capacity of 30 acre-feet, and collects water from a drainage area of 73 square miles. Completed in 1984, the structure is 42 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. Notably, no emergency action plan is currently on file for this high-hazard dam. The most recent inspection on record was 07/30/2024.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Maryland dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Maryland |
| County | Howard |
| Nearest City | Annapolis Junction |
| River/Stream | Little Patuxent-offstream |
| Coordinates | 39.12267, -76.79938 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 603 ft |
| Year Completed | 1984 (42 years old) |
Storage & Hydraulics
| NID Storage | 30 acre-ft |
| Max Storage | 30 acre-ft |
| Drainage Area | 73 sq mi |
| Max Discharge | 793 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | JUNCTION LIMITED PARTNERSHIP |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/30/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | MD00608 |
| Federal ID | MD00608 |
| More Info | State Dam Safety Program |