Lake Muir Nature Reserve
| Lake Muir Nature Reserve | |
|---|---|
Photo of Lake Muir from the Lake Muir Observatory | |
| Location | shires of Manjimup and Cranbook, South West region, Western Australia |
| Coordinates | 34°28′S 116°43′E / 34.467°S 116.717°E |
| Area | 113.11 km2 (43.67 sq mi) |
| Designation | Nature reserve |
| Established | 2001 |
| Official name | Muir-Byenup System |
| Designated | 5 January 2001 |
| Reference no. | 1050 |
Lake Muir Nature Reserve is a protected area in Western Australia. It encompasses Lake Muir and several smaller lakes and wetlands. It is an important refuge for water birds, and home to several rare plants and plant communities.