The Normanby River is a vast and wild river system in Far North Queensland, Australia, winding through the remote landscapes of Cape York Peninsula and the Wet Tropics region. Originating in the Great Dividing Range west of Wujal Wujal at an elevation of 622 metres (2,041 ft) above sea level, the system — comprising the East Normanby, West Normanby, East Normanby North Branch, East Normanby South Branch, and Granite Normanby rivers — travels over 490 kilometres before emptying into Princess Charlotte Bay within Rinyirru (Lakefield) National Park. The river drains a catchment of approximately 24,408 square kilometres, making it one of the most significant river systems in northern Australia. The lower reaches slow dramatically as the river approaches the sea, forming a broad delta surrounded by extensive wetlands, floodplains, seasonal and permanent freshwater lakes, and saline marshes. This is a true wilderness fishery — remote, productive, and teeming with tropical species — shaped by a wet-dry tropical climate that drives extreme seasonal variation in water levels and fish behavior.