| Mcdonald | |
| Name Other: | Macdonald; Collett |
| Pushpin Map: | Australia Queensland |
| Pushpin Map Caption: | Location of Mcdonald River mouth in Queensland |
| Subdivision Type1: | Country |
| Subdivision Name1: | Australia |
| Subdivision Type2: | State |
| Subdivision Name2: | Queensland |
| Subdivision Type3: | Region |
| Subdivision Name3: | Far North Queensland |
| Length: | 11km (07miles) |
| Source1: | Great Dividing Range |
| Source Confluence: | two unnamed creeks |
| Source Confluence Coordinates: | -11.5256°N 142.1372°W |
| Source Confluence Elevation: | 13m (43feet) |
| Mouth: | Gulf of Carpentaria |
| Mouth Location: | north of |
| Mouth Coordinates: | -11.5364°N 142.0689°W |
| Mouth Elevation: | 0m (00feet) |
| Basin Size: | 2723km2 |
| Extra: | [1] |
The Mcdonald River, also known as the Macdonald River and locally as the Collett River,[2] is a river in Far North Queensland, Australia.
The headwaters of the river rise in the foothills of the Great Dividing Range on Cape York Peninsula. Formed by the confluence of two unnamed creeks, the river flows in a westerly direction eventually discharging to the Gulf of Carpentaria, north of . The river descends over its 12km (07miles) course.[1]
The river has a catchment area of 2723km2 of which an area of 105km2 is composed of estuarine wetlands.[3]