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| Owasco Lake | |
|---|---|
 Owasco Lake, looking south. | |
  Owasco Lake Location within New York  Owasco Lake Owasco Lake (the United States) | |
| Location | Cayuga County, New York, United States |
| Group | Finger Lakes |
| Coordinates | 42°48′54″N 76°30′30″W / 42.81500°N 76.50833°W |
| Type | Ground moraine |
| Primary inflows | Owasco Inlet |
| Primary outflows | Owasco Outlet |
| Catchment area | 208 sq mi (540 km2) |
| Basin countries | United States |
| Max. length | 11 mi (18 km) |
| Max. width | 1.3 mi (2.1 km) |
| Surface area | 6,784 acres (2,745 ha) |
| Average depth | 96 ft (29 m) |
| Max. depth | 177 ft (54 m) |
| Water volume | .193 cu mi (0.80 km3) |
| Shore length1 | 24.7 miles (39.8 km) |
| Surface elevation | 712 ft (217 m) |
| Islands | 2 (Off of Burtis Point and Deauville Island) |
| Settlements | Auburn, New York, Cascade, New York |
| 1 Shore length is not a well-defined measure. | |
Owasco Lake /oʊˈwɑːskoʊ/ is the sixth largest and third easternmost of the Finger Lakes of New York in the United States.