Mary's Creek #9 Dam
Mary's Creek #9 Dam is an earth dam located in Shelby County, Tennessee, built in 1962. It carries a Significant hazard potential classification and has a fair condition assessment.
About Mary's Creek #9 Dam
Mary's Creek #9 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 Crossroads.
The dam stands 26 feet tall and stretches 700 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 185 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1962, 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 05/15/2025.
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Location
| State | Tennessee |
| County | Shelby |
| Nearest City | Crossroads |
| River/Stream | Trib-mary's Creek |
| Coordinates | 35.14833, -89.65500 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Length | 700 ft |
| Year Completed | 1962 (64 years old) |
Storage & Hydraulics
| NID Storage | 185 acre-ft |
| Max Storage | 185 acre-ft |
| Normal Storage | 41 acre-ft |
| Surface Area | 10 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 | Fair |
| Last Inspection | 05/15/2025 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TN15739 |
| Federal ID | TN15739 |
| More Info | State Dam Safety Program |