Mary's Creek #10 Dam is an earth dam located in Shelby County, Tennessee, built in 1961. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 26 ft26 ft tall and 742 ft long, taller than 55% 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 #10 Dam
The primary purpose of Mary's Creek #10 Dam 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 Shelby County Soil Conservation District (local government). It impounds the Trib-mary's Creek near Germantown.
The dam stands 26 feet tall and stretches 742 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 213 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1961, 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.
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Location
| State | Tennessee |
| County | Shelby |
| Nearest City | Germantown |
| River/Stream | Trib-mary's Creek |
| Coordinates | 35.12083, -89.68333 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Length | 742 ft |
| Year Completed | 1961 (65 years old) |
Storage & Hydraulics
| NID Storage | 213 acre-ft |
| Max Storage | 213 acre-ft |
| Normal Storage | 42 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| 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 | TN15752 |
| Federal ID | TN15752 |
| More Info | State Dam Safety Program |