North Laurel Park Swm Pond (sewall Avenue) is an earth dam located in Howard County, Maryland, built in 1998. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 30 ft30 ft tall and 270 ft long, taller than 68% of U.S. dams with a recorded height. 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 North Laurel Park Swm Pond (sewall Avenue)
The primary purpose of North Laurel Park Swm Pond (sewall Avenue) 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 Cornerstone Holdings, LLC (private). It impounds the Patuxent River-tr.
The dam stands 30 feet tall and stretches 270 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 33 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1998, the structure is 28 years 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 05/19/2022.
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Location
| State | Maryland |
| County | Howard |
| River/Stream | Patuxent River-tr |
| Coordinates | 39.11502, -76.84925 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 270 ft |
| Year Completed | 1998 (28 years old) |
Storage & Hydraulics
| NID Storage | 33 acre-ft |
| Max Storage | 33 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 493 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Cornerstone Holdings, LLC |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/19/2022 |
| Emergency Action Plan | No |
Identifiers
| NID ID | MD00377 |
| Federal ID | MD00377 |
| More Info | State Dam Safety Program |