| Mortlock | |||||||||||||||
| Name Etymology: | Henry Mortlock Ommanney, a surveyor | ||||||||||||||
| Map: |
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| Subdivision Type1: | Country | ||||||||||||||
| Subdivision Name1: | Australia | ||||||||||||||
| Subdivision Type2: | State | ||||||||||||||
| Subdivision Name2: | Western Australia | ||||||||||||||
| Subdivision Type3: | Region | ||||||||||||||
| Subdivision Name3: | Wheatbelt | ||||||||||||||
| Length: | 81km (50miles) | ||||||||||||||
| Discharge1 Location: | mouth | ||||||||||||||
| Discharge1 Avg: | 17800000m3/s | ||||||||||||||
| Source1 Location: | near Belmunging | ||||||||||||||
| Source1 Coordinates: | -31.8633°N 117.1506°W | ||||||||||||||
| Source1 Elevation: | 249m (817feet) | ||||||||||||||
| Mouth: | Avon River | ||||||||||||||
| Mouth Location: | west of Northam | ||||||||||||||
| Mouth Coordinates: | -31.6447°N 116.6722°W | ||||||||||||||
| Mouth Elevation: | 146m (479feet) | ||||||||||||||
| River System: | Avon River | ||||||||||||||
| Basin Size: | 16800km2 | ||||||||||||||
| Extra: | [1] [2] | ||||||||||||||
The Mortlock River is a perennial river in the Wheatbelt region of Western Australia.
The headwaters of the river rise near Belmunging then flow in a northerly direction, crossed by the Goldfields Road and continuing in a north-westerly direction to finally flow parallel to the Northam York Road and crossed by the Great Eastern Highway. The river is joined by three minor tributaries: Mortlock River North, Mortlock River East and Meenaar South Creek. The river discharges into the Avon River, just west of Northam. The Mortlock descends over its 81km (50miles) course.[1]
The river is saline and delivers the most salt (approximately 91t per year) into the Avon River.
The river was named after the surveyor Henry Mortlock Ommanney in the 1830s. Ommanney visited the river during an expedition through the area in 1835.