Mountain Island
High HazardFair ConditionEmergency Action Plan: Yes
Location
| State | North Carolina |
| County | Gaston |
| Nearest City | Mount Holly |
| River/Stream | Catawba River |
| Coordinates | 35.33580, -80.98484 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 140 ft |
| Dam Height | 140 ft |
| Dam Length | 2,375 ft |
| Year Completed | 1923 (103 years old) |
Storage & Hydraulics
| NID Storage | 45,970 acre-ft |
| Max Storage | 45,970 acre-ft |
| Normal Storage | 45,970 acre-ft |
| Surface Area | 3,235 acres |
| Drainage Area | 1,860 sq mi |
| Max Discharge | 383,685 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Duke Energy |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 06/07/2022 |
| Emergency Action Plan | Yes |