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Avon River (Western Australia)
The Avon River is a river in Western Australia. A tributary of the Swan River, the Avon flows 〔 from source to mouth, with a catchment area of .
==Avon catchment area==
Lake Yealering in the Shire of Wickepin is the point of origin for the upper Avon River, and the catchment size above the confluence with the Salt River at Yenyenning Lake is .〔http://www.wheatbeltnrm.org.au/about-us/our-region/avon-region/〕
The basin covers much of West Australian wheatbelt〔Western Australia.(2008) Dept. of Water. ''Managing waterways in the Avon wheatbelt: field guide'' 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 Natural Heritage Trust and the National Action Plan for Salinity and Water Quality." "June 2008" http://henrietta.liswa.wa.gov.au/record=b2561801~S2 – Also available as an electronic version via the Internet. ISBN 978-1-921468-75-9〕 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 Wongan Hills ever drained water into the river. Under present climatic conditions, it is almost impossible to produce runoff 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 Lockhart rivers.
The river flows past Quajabin Peak, creating a picturesque view from the top.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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