It skirts the northern end of Cayuga Lake at the Montezuma Marsh .
It turns north , receiving the Clyde River from the west , forming the Seneca -- Cayuga county line , then the border of Cayuga and Wayne counties .
Skirting the northern end of Cayuga Lake at the Montezuma Marsh , it turns north , receiving the Clyde River from the west , forming the Seneca -- Cayuga county line , then the border of Cayuga and Wayne counties .