On Thursday, November 16, 2006 1:11 PM Andrew Taylor wrote:
The Tillegra dam is supposed to have a capacity of 450,000 megalitres
at a cost of $350 million. So it'll cost 400x more but hold 100,000x
more water than the Parramatta tanks.
Without checking your figures, this is what I've always suspected about
water tanks - more of an expensive gimmick than a cost effective solution
(in the city). I'd have to pay about $1000 for a tank that would hold less
than $1 worth of water. I've always thought people's tank money would be
better directed towards large scale projects, but I hadn't considered the
environmental impact of dams.
Could a backyard tank be considered to have much environmental impact? Apart
from the impact of the manufacturing process, I mean. They aren't going to
directly disrupt many habitats, but I've been wondering about reduced
runoffs and whether that would affect anything.
I feel more than a little sympathy for the dairy farmers forced off
land
that they have held for generations.
Members of my family have been unlucky enough to have been displaced by the
Hume Dam and then Eildon, so fingers crossed for the next one.
Peter Shute
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