The Cato River is a tidal estuary located in the remote East Arnhem Region of Australia's Northern Territory. The primary access point for paddlers is the Cato River Campground, also referred to as the Cato River Recreational Area, which is operated by the Liya Wanhurr Aboriginal Corporation and is located close to the Dhalinybuy homeland. This campground provides a base for day use and is the complimentary campsite associated with local cultural tours. The river flows into Arnhem Bay, and its mouth opens into the ocean. This is a saltwater environment with significant and active crocodile populations. A notable safety incident involved a five-metre saltwater crocodile aggressively attacking moored boats on the river, demonstrating that crocodiles in this area can be large, territorial, and pose a serious threat to paddlers, especially during breeding season or when boats are stationary. The area is culturally significant to the Yolŋu people, and the river flows through Wangurri country. The surrounding landscape is rugged, requiring a 4WD vehicle for access. The river is a perennial waterbody. Nearby attractions include the Bindawuy Waterfall Recreational Area, which features a freshwater waterfall, but this is a separate land-based site accessible from the campground, not a feature of the river itself. Given the remote location and the presence of large, potentially aggressive crocodiles, any paddling activity on the Cato River must be undertaken with extreme caution and a thorough understanding of crocodile safety protocols.