Hattah Lakes and the Lindsay-Wallpolla floodplains are located
on the Murray River, upstream and downstream of Mildura
respectively. These areas are two of the six, nationally
identified, 'Living Murray' Icon sites that have been targeted for
improvement and maintenance of ecological values.
GHD is working with local catchment management and water
resource agencies to further investigate the environmental
characteristics of wetland and wetland complexes in the Hattah
Lakes, Lindsay and Mulcra components of the Murray River
floodplains.
Previous studies proposed various structural works options at a
broad scale – the assessments further refined ecological targets
and management and works options.
The Hattah Lakes project involved geotechnical investigations of
the proposed regulator sites; the identification of any
environmental, cultural heritage and social issues; and the
assessment of construction access and maintenance routes to
minimise costs.
The works include the design of control regulators, block banks,
a pump station, erosion control measures and fish passages.
As an integral part of the design, the implementation, maintenance
and operational costs were calculated for various options.