Owasco Lake is a Finger Lake lying entirely within Cayuga County in central New York, the third easternmost and sixth largest of the chain. It is 11.1 miles long and up to 1.3 miles wide, with a maximum depth of 177 feet, and it drains the largest watershed of any of the Finger Lakes. The city of Auburn sits at the northern end and draws its drinking water from the lake, while the hamlet of Cascade lies at the south end. The name may come from the Iroquois word dwas-co, meaning bridge on the water.