Tappan Dam
High HazardNot Available ConditionEmergency Action Plan: Yes
Location
| State | Ohio |
| County | Harrison |
| Nearest City | DENNISON |
| River/Stream | LITTLE STILLWATER CREEK |
| Coordinates | 40.35888, -81.22664 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 52 ft |
| Dam Length | 1,550 ft |
| Year Completed | 1936 (90 years old) |
Storage & Hydraulics
| NID Storage | 61,600 acre-ft |
| Max Storage | 61,600 acre-ft |
| Normal Storage | 35,100 acre-ft |
| Surface Area | 2,350 acres |
| Drainage Area | 71 sq mi |
| Max Discharge | 23,700 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | USACE - Huntington District |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 04/04/2024 |
| Emergency Action Plan | Yes |