Otisco Lake Dam
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| County | Onondaga |
| Nearest City | Marietta |
| River/Stream | NINEMILE CREEK |
| Coordinates | 42.90444, -76.31250 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 310 ft |
| Year Completed | 1956 (70 years old) |
Storage & Hydraulics
| NID Storage | 47,890 acre-ft |
| Max Storage | 47,890 acre-ft |
| Normal Storage | 26,067 acre-ft |
| Surface Area | 2,291 acres |
| Drainage Area | 39 sq mi |
| Max Discharge | 31,345 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | ONONDAGA COUNTY WATER AUTHORITY (OCWA) |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/23/2023 |
| Emergency Action Plan | Yes |