Onondaga

Onondaga, county, central New York state, U.S., bounded by the Oswego and Oneida rivers to the north, Oneida Lake to the northeast, De Ruyter Reservoir to the southeast, Skaneateles Lake to the southwest, and Cross Lake to the west. It comprises a marshy lowland in the north and a hilly plateau region in the south. Other waterways include Onondaga and Otisco lakes and the Seneca River. Canals of the New York State Canal System (including...