Arrowsmith River
Drainage Basin |
Length (km) |
Catchment Area (km2) |
Average Stream Salinity (mg/L) |
Key Characteristics |
Greenough |
82 |
1,605 |
3000-35000 |
Commences near Arrino, north west of Three Springs. It has no clearly defined ocean outlet, and drains into a subterranean cave system. |
Bowes River
Drainage Basin |
Length (km) |
Catchment Area (km2) |
Average Stream Salinity (mg/L) |
Key Characteristics |
Greenough |
50 |
715/td>
| 1000-35000 |
Drains the farming areas in and around the Waterloo Range, comprising small estuaries, with average depths of less than 3 metres. Only open to the ocean for a few days, mainly during the months of June and August. |
Buller River
River |
Length (km) |
Catchment |
Key Characteristics |
Buller |
10 |
33.9 |
The Buller River head waters rises 25 km north of Geraldton and meanders in a southerly directions before discharging into the Indian Ocean approximately 4 km north of Drummonds Cover. |
Chapman River
Drainage Basin |
Length (km) |
Catchment Area (km2) |
Average Stream Salinity (mg/L) |
Key Characteristics |
Greenough |
80 |
1,644 |
3000-35000 |
Originates east of Yuna and drains the farming areas of the Chapman Valley. The river enters the ocean within the northern suburbs of Geraldton and is only open to the ocean during winter flows. |
Gingin Brook
Drainage Basin |
Length (km) |
Catchment Area (km2) |
Average Stream Salinity (mg/L) |
Key Characteristics |
Moore-Hill |
46 |
1,370 |
< 1000 |
Gingin Brook is the only remaining freshwater creek passing over the Swan Coastal Plain. It has almost permanent flow since it is fed by springs as well as general groundwater.
For information on the allocation plan click here. |
Greenough River
Drainage Basin |
Length (km) |
Catchment Area (km2) |
Average Stream Salinity (mg/L) |
Key Characteristics |
Greenough |
306 |
12,568 |
3000-35000 |
Originates in the pastoral region north east of Mullewa, and flows through farming areas, entering the ocean at Cape Burney, south of Geraldton. The sandbar across the estuary is only opened by significant flows. It contains numerous pools including Eradu, Beetalyinna and Ellendale. |
Hill River
Drainage Basin |
Length (km) |
Catchment Area (km2) |
Average Stream Salinity (mg/L) |
Key Characteristics |
Moore-Hill |
124 |
3,721 |
1000-3000 |
Originates east of Badgingarra and enters the ocean halfway between Cervantes and Jurien. The estuary is blocked by a sandbar for most of the year and the rivers major tributaries are the Munbinea, Coomallo, Boothendarra and Winjardie Creeks. The lower reaches are also groundwater fed. |
Hutt River
Drainage Basin |
Length (km) |
Catchment Area (km2) |
Average Stream Salinity (mg/L) |
Key Characteristics |
Greenough |
50 |
1,254 |
1000-35000 |
Drains the farming areas in and around the Waterloo Range, comprising small estuaries, with average depths of less than 3 metres. Only open to the ocean for a few days, mainly during the months of June and August. |
Irwin River
Drainage Basin |
Length (km) |
Catchment Area (km2) |
Average Stream Salinity (mg/L) |
Key Characteristics |
Greenough |
160 |
6,072 |
3000-35000 |
Originates east of Mullewa, and has middle and lower reaches with perennial flow due to discharge from the groundwater systems. The river enters the ocean at Dongara and the mouth of the river is a coastal lagoon system, which is blocked by a sandbar for most of the year. |
Moore River
Drainage Basin |
Length (km) |
Catchment Area (km2) |
Average Stream Salinity (mg/L) |
Key Characteristics |
Moore-Hill |
288 |
13,450 |
3000-35000 |
The Moore River’s eastern reaches (Moore River East) which originates near Dalwallinu, and northern reaches (Moore River North) commences east of Coorow. The major tributaries are the Coonderoo River and Gingin Brook. The Moore River enters the ocean at Guilderton and the estuary is only open to the ocean for a few weeks each year. |
Murchison River
Drainage Basin |
Length (km) |
Catchment Area (km2) |
Average Stream Salinity (mg/L) |
Key Characteristics |
Murchison |
300 |
14,850 |
3000-35000 |
Lower reaches are listed on the Directory of Important Wetlands. Enters the ocean at Gantheaume Bay. River mouth is permanently open to the ocean due to dredging. Major tributaries are the Hope, Yalgar, Roderick and Sandford Rivers. |
Nambung River
River |
Length (km) |
Key Characteristics |
Nambung |
22 |
The Nambung River meanders between the towns of Cervantes and Badgingarra. The river ceases within the Nambung National Park in Karst terrain approximately 9 km south east of Cervantes. |