| Ellen Brook | |
|---|---|
 Ellen Brook near Millhouse Road bridge in Belhus, July 2021 | |
 | |
| Location | |
| Country | Australia |
| State | Western Australia |
| Physical characteristics | |
| Source | Groundwater, various streams |
| • location | South of Gingin |
| • coordinates | 31°27′50″S 115°55′41″E / 31.464°S 115.928°E |
| Mouth | Swan River |
• location | Belhus |
• coordinates | 31°47′42″S 116°00′18″E / 31.795°S 116.005°E |
| Length | 65 km (40 mi) |
| Basin size | 715 km2 (276 sq mi) |
| Discharge | |
| • average | 8.9 gigalitres |
Ellen Brook is an ephemeral stream which runs from south of Gingin to the Swan River in Western Australia.