Big Ridge Dam
Significant HazardSatisfactory ConditionEmergency Action Plan: Not Required
Location
| State | Tennessee |
| County | Union |
| Nearest City | NORRIS |
| River/Stream | TRIB-NORRIS LAKE |
| Coordinates | 36.24972, -83.93444 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 50 ft |
| Dam Length | 197.5 ft |
| Year Completed | 1936 (90 years old) |
Storage & Hydraulics
| NID Storage | 1,100 acre-ft |
| Max Storage | 1,100 acre-ft |
| Normal Storage | 1,027 acre-ft |
| Surface Area | 46 acres |
| Drainage Area | 1 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | Tdec |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 01/12/2026 |
| Emergency Action Plan | Not Required |