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The IAL trials were one of the sources of information
for development of guidelines for identification, measurement and
remediation of channel seepage. Information from the trials appears
throughout this website. Two detailed case studies are also presented
and a template is provided as a guide for presentation of further
case studies.
Donald Main Channel
The Donald Main Channel in the Wimmera Mallee Water (WMW) supply
system has a long history of seepage problems, investigation and
seepage trials. Two separate lengths of channel with apparent high
seepage rates were investigated to quantify seepage losses, determine
the effect of channel seepage on land salinity and identify and evaluate
seepage reduction options. The investigation included pondage tests,
soil mapping, salinity mapping, EM34, water chemistry analysis and
permeameter tests.
Waranga Western Channel
The upgrading of the capacity of the Waranga Western
Channel (WWC), an open irrigation channel maintained
by Goulburn Murray Water, had the potential to exacerbate
existing and create new seepage problems. A seepage investigation
program was undertaken to identify the sections of channel
that would require lining as part of the works. Geophysical,
geological, pondage test data and field inspections were
used to determine areas requiring clay lining.
Case study template
We encourage contributions to this website through the
submission of case studies documenting channel seepage
remediation experience. The case study template provides
a uniform structure for water authorities to document
their experience. Publication of this will expand the
collective knowledge of seepage remediation in Australia. |
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