| Peel Main Drain | |
|---|---|
 The Peel Main Drain at Baldivis | |
 Route of the Peel Main Drain | |
| Location | Perth, Western Australia |
| Country | Australia |
| History | |
| Construction began | 1920 |
| Geography | |
| Beginning coordinates | 32°09′46″S 115°52′54″E / 32.1627°S 115.8818°E |
| Ending coordinates | 32°24′01″N 115°49′52″E / 32.4002°N 115.8310°E |
The Peel Main Drain is a drainage canal in the southern suburbs of Perth, Western Australia. Construction of the canal commenced in 1920 to drain the wetlands in the area as part of the post-World War I Group Settlement Scheme at the Peel Estate. The canal stretches from Banjup, where it starts just north of Banjup Lake, to Karnup, where it discharges into the Serpentine River. The drain has a catchment area of 120 square kilometres (30,000 acres).
In regards to its purpose, the Peel Main Drain was a failure, as was the whole Peel Estate scheme, as it was never able to dewater the land sufficiently.