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The dam seems to have little connection to woodland
research. It is just as easy to point out that the dam seems to be a focus for
Noisy Miners and that they drove away the treecreepers.
COG spends a lot of time counting birds. I think we
should expand our efforts to behavioral studies of some declining
species.
As an ex soils person perhaps I could offer the
following comment on the dam.
It is built of unsuitable
material. The clay used in its wall is sodic
(means salty) and dispersible (means that when it is exposed to fresh water it
"dissolves"). The breach could be repaired with clay amended with gypsum and
bentonite but it is highly likely that the wall would then fail somewhere else.
As there are now people living downstream that is an unacceptable
risk.
Tom
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