Otter Lake Reservoir
| Reservoir Name | Otter Lake |
| Dam Name | Otter Lake Dam |
| River | West Fork of Otter Creek |
| Administration City | Illinois |
| Country | United States |
| Year | 1969 |
| Dam Height | 22 |
| Dam Length | 308 |
| Area(Sqkm) | 2.7 |
| Area(Polygonal) | 2.7 |
| Capital Expenditure | 30.5 |
| Depth(M) | 11.3 |
| Avg Displacement Of Water | 580 |
| Catchment Area In Sqkm | 55 |
| Main Usage | Water supply |
| Status | 2: Good |
| Longitude | -89.91125 |
| Latitude | 39.407917 |
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