Mary's Creek #11 Dam is an earth dam located in Shelby County, Tennessee, built in 1959. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 28 ft28 ft tall and 700 ft long, taller than 62% 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 Mary's Creek #11 Dam
Mary's Creek #11 Dam is a dam in Shelby, Tennessee. The dam is owned by Shelby County Soil Conservation District (local government). It impounds the Trib-mary's Creek near Germantown.
The dam stands 28 feet tall and stretches 700 feet across, creates a reservoir covering 23 acres, has a maximum storage capacity of 372 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1959, the structure is well into its service life at over 50 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 05/31/2024.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Tennessee |
| County | Shelby |
| Nearest City | Germantown |
| River/Stream | Trib-mary's Creek |
| Coordinates | 35.12361, -89.67083 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Length | 700 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 372 acre-ft |
| Max Storage | 372 acre-ft |
| Normal Storage | 142 acre-ft |
| Surface Area | 23 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | Shelby County Soil Conservation District |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/31/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TN15770 |
| Federal ID | TN15770 |
| More Info | State Dam Safety Program |