Actually, a very basic map is possible.
[link|http://maps.google.com/maps?ll=-34.066312,151.020813&spn=1.708671,2.282410&hl=en|http://maps.google.c...71,2.282410&hl=en]
This will show you a water-and-land-only view, which may give you an idea.
The biggest squiqqle off to the left is Lake Burragorang, behind Warragamba Dam, Sydney's largest dam. It's got four blobs to the right of it, the largest of which is Prospect Reservoir. Due east of Prospect is Sydney Harbour. South of the Harbour is Botany Bay and the Georges River and then Bate Bay and Port Hacking River. (Sydney's Cronulla beach is on Bate Bay.) The splotch to the left and slightly below the Port Hacking is Woronora Dam. I live in Heathcote which is about midway between them.
Wade.
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