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94. Bayles - Yallock Creek Levee Banks

This information has been developed from one or more of these publications:

  • Sites of Geological and Geomorphological Significance in the Westernport Bay Catchment (1984) by Neville Rosengren.
  • Sites of Geological and Geomorphological Significance in the Western Region of Melbourne (1986) by Neville Rosengren
  • Sites of Geological and Geomorphological Significance on the Coast of Port Phillip Bay (1988) by Neville Rosengren.
  • Sites of Environmental Significance in the Flood Plain of the Upper Yarra Valley Region (1983) by Neville Rosengren, Douglas Frood and Kim Lowe (as part of a study of Sites of Environmental Significance by the University of Melbourne for the then Upper Yarra Valley and Dandenong Ranges Authority).
Geological heritage sites, including sites of geomorphological interest and volcanic heritage sites, are under regular revision by the Geological Society of Australia, especially in the assessment of significance and values. Reference should be made to the most recent reports. See the Earth Science Heritage section of the Geological Society of Australia website (external link) for details of geological heritage reports, and a bibliography.


Location:

Bayles - 730723. Two kilometres south-east of Bayles.

Access:

Number Five Drain Road.

Ownership:

Private land.

Geomorphology:

The site includes a former channel of the Yallock Creek indicated by a depression flanked by parallel ridges which are the remnants of natural levee banks. The ridges are of fine to coarse sand and include gravels up to one centimetre in length. The flat area to the north of the channel is a drained lake or swamp on the flood plain of Yallock Creek. The area is now isolated from floodwaters by artificial levee banks that confine the modern day flow of the creek.

Significance:

Regional. This sand deposit in the Bayles area is evidence of the existence of stream channels transporting a substantial sediment load prior to the development of the Koo-Wee-Rup swamps. It represents a distinct phase in the development of the topography of this part of the Westernport Bay catchment.

Management:

Class 2. Substantial excavations or extensive construction works that masked or altered the relief features described should not be permitted.

References:

Hills, E.S., 1942. The physiography of the Koo-Wee-Rup Swamp.
Proc. Roy. Soc. Vict. 54(1) 79-92.
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