Wyperfeld National Park
History
Like most of north-western Victoria, Wyperfeld was a shallow sea from about 25 million years ago until fairly recent times. The current landforms took shape as the sea gradually retreated from 40,000 to 15,000 years ago, leaving a vast expanse of sandy sediment which formed into sand dunes as it dried.
Before European settlement, a network of ephemeral lakes in the area filled and emptied, on average, about every 20 years, typically remaining dry for about half that period. More recently, agricultural irrigation and drainage projects in the surrounding areas have cut off a significant part of Wyperfeld's water supply. Consequently, the lakes have not been completely filled since 1975, and had drained again just two years later.
Environment
In good years, the Wimmera River fills Lake Hindmarsh to the south of the park, which overflows along Outlet Creek and then fills Lake Albacutya to the immediate south of the park. Given sufficient rain in the catchment, the water flows further north into Wyperfeld itself, forming a series of smaller lakes, which support rich floral and faunal communities based around black box and river red gum. Despite downstream flooding in 2011, the park has seen no inflow of water for many years.
The reserve is part of the Wyperfeld, Big Desert and Ngarkat Important Bird Area, identified as such by BirdLife International because of its importance for the conservation of malleefowl and other species of mallee birds.
See also
References
- ^ "Mallee Parks Management Plan" (PDF). Parks Victoria (PDF). Government of Victoria. September 1996. pp. 1–3. ISBN 0-7306-6174-1. Archived (PDF) from the original on 1 May 2012. Retrieved 16 August 2014.
- ^ "Parched lake may end 15-year dry".
- ^ "Important Bird Areas factsheet: Wyperfeld, Big Desert and Ngarkat". BirdLife International. 2011. Archived from the original on 28 November 2001. Retrieved 6 December 2011.
External links
- "Wyperfeld National Park". Parks Victoria. Government of Victoria.