545:
38:
1808:
525:), the rooting density of native flora is very high and its average specific discharge is probably the lowest of any basin of comparable size in the world. The extreme age of the soils also means that, at least after clearing for agriculture, almost all rivers in the basin have salinities above 0.3% (one-tenth that of the oceans and eight times that necessary to qualify as "fresh" water) and some much more than that.
53:
423:
and extends beyond that in some areas near almost-always-dry Lake Moore in the northeast, water is received regularly from only the extreme western edge of the basin. Indeed, until an abnormally wet year in 1963 it was not realised that the northeastern part of the basin beyond
532:
issues, which have attracted governmental programmes to alleviate the loss of agricultural lands. Catchment groups that oversee projects in the tributary parts of the river have had considerable support and funding from commercial and non-governmental sources as well.
432:
from anywhere outside the extreme west of the basin because the amount of rain required to fall before runoff would begin is as high or higher than the mean annual rainfall. The river has three main sub-catchments: catchments for the
Mortlock, Yilgarn, and
657:
Perth, W.A. Dept. of Water – "This is an Avon
Catchment Council project delivered by the Department of Water and funded with investment from the state and Australian governments through the
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984:
1204:
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397:, the Avon flows 240 kilometres (150 mi) from source to mouth, with a catchment area of 125,000 square kilometres (48,000 sq mi).
217:
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137:
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558:
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1834:
665:
630:"Avon Region - Wheatbelt Natural Resource Management - Leading natural resource management (NRM) endeavours - Avon River Basin"
528:
Passing through some of the oldest settled
European agricultural areas in Western Australia, the catchment area has extensive
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1443:
787:
1638:
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is the point of origin for the upper Avon River, and the catchment size above the confluence with the Salt River at
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ever drained water into the river. Under present climatic conditions, it is almost impossible to produce
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43:
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8:
1284:
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Thirty creeks and rivers flow into the Avon; some of the larger tributaries include the
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and the
National Action Plan for Salinity and Water Quality." "June 2008"
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723:. Vol. 62, no. 22. Western Australia. 10 June 1966. p. 1
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Some permanent pools exist along the course of the river including
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479:, Robins Pool, Long Pool, Cobblers Pool and Jimperding Pool.
52:
672:– Also available as an electronic version via the Internet.
518:
482:
The Avon River Valley is the third and final route for the
416:
is 91,500 square kilometres (35,300 sq mi).
655:
Managing waterways in the Avon wheatbelt: field guide
540:
663:
http://henrietta.liswa.wa.gov.au/record=b2561801~S2
57:Location of the Avon River and its catchment area
1826:
521:in the basin (which is on the extremely ancient
809:
472:and only flow after rain in winter and spring.
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444:, creating a picturesque view from the top.
802:
788:
775:Wheatbelt Natural Resource Management Inc.
731:– via National Library of Australia.
51:
749:Perth, W.A.: Water and Rivers Commission
653:Western Australia.(2008) Dept. of Water.
559:List of watercourses in Western Australia
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574:
498:, having been constructed in the 1960s.
270:125,000 km (48,000 sq mi)
1827:
447:
400:
783:
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25:River in Western Australia, Australia
517:Due to the extraordinary age of the
389:is a river in Western Australia. A
304:10 m/s (350 cu ft/s)
13:
739:
616:State Library of Western Australia
16:For other rivers called Avon, see
14:
1851:
760:
690:"Natural attractions in Beverley"
586:Bonzle Digital Atlas of Australia
468:. Most of these watercourses are
1807:
1806:
543:
36:
767:http://www.wheatbeltnrm.org.au/
747:The Avon : an introduction
42:Avon River flowing through the
1840:Swan River (Western Australia)
1835:Avon River (Western Australia)
707:
682:
647:
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211: • coordinates
131: • coordinates
1:
715:"Tourist Road at County Peak"
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419:The basin covers much of the
98:Physical characteristics
501:It is the site of an annual
421:Western Australian wheatbelt
250: • elevation
170: • elevation
7:
536:
288: • location
201: • location
118: • location
10:
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608:"The Swan-Avon Catchments"
300: • average
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985:Gairdner (Great Southern)
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612:Describing the Swan River
378:Avon Valley National Park
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262:240 km (150 mi)
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44:Avon Valley National Park
35:
30:
745:Harris, T. F. W. (1996)
551:Western Australia portal
512:
353: • right
174:269 m (883 ft)
582:"Map of Avon River, WA"
341: • left
771:Avon Catchment Council
659:Natural Heritage Trust
254:29 m (95 ft)
233:31.74278°S 116.06778°E
153:32.74778°S 117.46667°E
1684:Margaret (South West)
1020:King (Great Southern)
440:The river flows past
1230:Margaret (Kimberley)
1170:Gairdner (Kimberley)
876:Goldfields-Esperance
668:8 March 2012 at the
238:-31.74278; 116.06778
158:-32.74778; 117.46667
773:– known now as the
636:on 19 February 2011
618:. 23 November 2010.
505:boating event, the
448:Course and features
401:Avon catchment area
313:Basin features
229: /
149: /
720:The Beverley Times
205:below Mount Mambup
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812:Western Australia
678:978-1-921468-75-9
486:line through the
410:Shire of Wickepin
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82:Western Australia
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61:
54:
49:
45:
39:
34:
29:
23:
19:
1811:
1738:
1529:George River
774:
770:
746:
725:. Retrieved
718:
709:
697:. Retrieved
694:Beverley, WA
693:
684:
654:
649:
638:. Retrieved
634:the original
624:
611:
602:
592:17 September
590:. Retrieved
585:
527:
516:
507:Avon Descent
500:
481:
477:Burlong Pool
474:
466:Mackie River
451:
439:
426:Wongan Hills
418:
404:
386:
384:
358:Mackie River
320:River system
192:to form the
22:
1494:Balla Balla
1215:King George
1210:King Edward
1120:Chamberlain
1040:Waychinicup
895:Jerdacuttup
442:County Peak
332:Tributaries
236: /
156: /
1829:Categories
1679:Lunenburgh
1600:South West
1444:Serpentine
1330:Arrowsmith
1095:Berckelman
975:Fitzgerald
810:Rivers of
727:23 October
640:2010-11-28
565:References
503:whitewater
454:Dale River
395:Swan River
387:Avon River
346:Dale River
326:Swan River
267:Basin size
221:31°44′34″S
194:Swan River
144:117°28′0″E
141:32°44′52″S
18:River Avon
1730:Wheatbelt
1644:Buayanyup
1639:Brunswick
1634:Blackwood
1624:Bannister
1554:Nullagine
1524:Frederick
1519:Fortescue
1489:Ashburton
1375:Murchison
1350:Greenough
1280:Pentecost
1265:Nicholson
1056:Kimberley
1000:Hamersley
980:Frankland
905:Munglinup
885:Alexander
835:Frederick
470:ephemeral
391:tributary
279:Discharge
224:116°4′4″E
92:Wheatbelt
72:Australia
1813:Category
1779:Mortlock
1764:Lockhart
1749:Buchanan
1744:Brockman
1669:Ferguson
1664:Donnelly
1654:Carbunup
1629:Beaufort
1619:Balgarup
1579:Sherlock
1549:Maitland
1459:Williams
1414:Dandalup
1321:Mid West
1295:Robinson
1290:Richenda
1255:Mitchell
1200:Johnston
1130:Drysdale
1125:Charnley
1100:Berkeley
1025:Pallinup
915:Phillips
910:Oldfield
865:Wooramel
840:Gascoyne
821:Gascoyne
699:19 April
666:Archived
537:See also
490:between
464:and the
437:rivers.
435:Lockhart
124:Pingelly
122:East of
63:Location
1794:Yilgarn
1784:Nambung
1719:Worsley
1689:Preston
1559:Oakover
1539:Harding
1514:De Grey
1509:Coongan
1499:Beasley
1475:Pilbara
1409:Canning
1404:Bennett
1397:regions
1345:Chapman
1225:Lennard
1180:Glenelg
1160:Forrest
1155:Fitzroy
1080:Barnett
1070:Armanda
1035:Walpole
1030:Shannon
965:Denmark
855:Minilya
496:Northam
492:Midland
408:in the
393:of the
68:Country
1769:Mackie
1732:region
1714:Warren
1694:Sabina
1674:Ludlow
1659:Collie
1614:Arthur
1602:region
1584:Turner
1569:Rudall
1534:Hardey
1484:Angelo
1477:region
1464:Claise
1439:Murray
1434:Hotham
1429:Helena
1424:Harvey
1380:Yalgar
1340:Buller
1323:region
1310:Wilson
1275:Panton
1195:Isdell
1190:Hunter
1165:Fraser
1150:Ernest
1145:Elvire
1140:Durack
1135:Dunham
1115:Carson
1110:Calder
1085:Barton
1075:Barker
1065:Adcock
1058:region
1010:Kalgan
995:Gordon
990:Goodga
955:Bremer
945:Angove
938:region
920:Steere
890:Dalyup
878:region
860:Thomas
845:Landor
830:Edmund
823:region
753:
676:
588:. 2011
430:runoff
335:
282:
259:Length
107:Source
88:Region
1774:Moore
1709:Vasse
1699:Scott
1649:Capel
1544:Henry
1419:Ellen
1395:Perth
1370:Irwin
1365:Impey
1335:Bowes
1260:Negri
1245:McRae
1220:Laura
925:Young
850:Lyons
519:soils
513:Soils
293:mouth
184:Mouth
78:State
1789:Salt
1759:Hill
1754:Dale
1739:Avon
1704:Tone
1609:Abba
1589:Yule
1574:Shaw
1564:Robe
1504:Cane
1454:Swan
1393:and
1391:Peel
1360:Hutt
1355:Hope
1305:Sale
1250:Meda
1235:Mary
1185:Hann
1175:Gibb
1090:Behn
1045:Weld
1015:Kent
970:Eyre
960:Deep
900:Lort
751:ISBN
729:2017
701:2018
674:ISBN
594:2011
494:and
385:The
31:Avon
1300:Roe
1270:Ord
1240:May
1005:Hay
950:Bow
1831::
717:.
692:.
614:.
610:.
584:.
573:^
509:.
460:,
456:,
364:,
360:,
803:e
796:t
789:v
703:.
643:.
596:.
20:.
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