the lower river. Parts of the river are infested by non-native zebra mussels, which have depleted the level of dissolved oxygen, impacting fish populations. The population density of mussels in one particular section of the river below Cross Lake is considered among the highest in North America. The river is home to a population of common snapping turtles. In July 2001, there was a recorded attack on one 43 year old male, near Fobes Island, who sustained minor injuries to the calf of his leg. This has been the only recorded attack on humans in the river so far. See also List of rivers of New York References External links Rivers of New York (state) Central New York Rivers of Onondaga County, New York Rivers of Cayuga County, New York Rivers of Wayne County, New York Rivers of Seneca County, New York Onondaga Lake