Norris Dam
Norris Dam is an earth dam located in St. Mary's County, Maryland, built in 1990. It carries a Low hazard potential classification.
About Norris Dam
The primary purpose of Norris Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Roy L. Norris (private). It impounds the St. Marys River-tr near Great Mills.
The dam stands 10 feet tall, creates a reservoir covering 12 acres, has a storage capacity of 84 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1990, the structure is 36 years old.
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 09/30/2021.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Maryland |
| County | St. Mary's |
| Nearest City | Great Mills |
| River/Stream | St. Marys River-tr |
| Coordinates | 38.27844, -76.49865 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Year Completed | 1990 (36 years old) |
Storage & Hydraulics
| NID Storage | 84 acre-ft |
| Normal Storage | 84 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Roy L. Norris |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 09/30/2021 |
| Emergency Action Plan | No |
Identifiers
| NID ID | MD00523 |
| Federal ID | MD00523 |
| More Info | State Dam Safety Program |