22.3 Johanna River Flood plain

This information has been developed from the publications:

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 Geological and Geomorphological Significance in the Shire of Otway (1984) by Neville Rosengren.

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 (external site) section of the Geological Society of Australia website for details of geological heritage reports, and a bibliography.

Location:	22-056074. One kilometre west of Johanna Beach.	Incised meanders of the Johanna River.
Access:	From Blue Johanna Road.
Ownership:	Private land and some Crown land (River Reserve).
Geomorphology:	The lower Johanna River follows an easterly course determined by resistant strata of Otway Group sandstones. Where this sequence has been breached, the Johanna and Stafford Creek have cut a wide valley now alluviated. The streams probably left this sector and flowed into the sea near the present camping ground area but the rivers have been further deflected to the east by the invasion of the valley by transgressive parabolic dunes. The alluvial sector is now further incised by the Johanna which displays tightly curled entrenched flood plain meanders,
Significance:	Regional. This forms the only alluvial valley deposit between the Aire and Gellibrand valley.

Incised meanders of the Johanna River.

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