Twin Branch
High HazardPoor ConditionEmergency Action Plan: Yes
Location
| State | Indiana |
| County | St. Joseph |
| Nearest City | Mishawaka |
| River/Stream | St Joseph River |
| Coordinates | 41.66589, -86.13272 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 41 ft |
| Dam Height | 41 ft |
| Dam Length | 946 ft |
| Year Completed | 1903 (123 years old) |
Storage & Hydraulics
| NID Storage | 10,000 acre-ft |
| Max Storage | 10,000 acre-ft |
| Normal Storage | 9,700 acre-ft |
| Surface Area | 1,065 acres |
| Drainage Area | 3,530 sq mi |
| Max Discharge | 37,600 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Indiana & Michigan Power Company |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 09/08/2022 |
| Emergency Action Plan | Yes |