CHAIRMAN’S ADDRESS. XLIX, 
gallons per day. Where the beds of the creeks are above 
the tunnel, the water would be diverted into it down the 
nearest shaft. Krom a pipe head reservoir at the junction 
with the canal, the water would be conveyed through a 
steel pipe laid along the main road passing through 
Campbelltown and Liverpool to the proposed distributing 
reservoir at Bankstown, having a pressure at that place of 
302 feet above high water. When delivering 25 million 
gallons per day, the cost per million gallons would be 
. practically the same at Bankstown as by the first scheme, 
but it would be about 17s. per million gallons less when 
delivering 50 million gallons per day, as the expense of 
tunnelling into the Cataract reservoir would be unnecessary, 
the water therefrom being conveyed to Sugarloaf by the 
existing works. 
The only advantage this scheme has over the first one, 
would be in its adding a larger area to the existing catch- 
ment, the surplus water during freshets, over what would 
be required at Bankstown, being passed on down to 
Prospect reservoir for storage. The 25 square miles 
additional catchment area beyond that of the first scheme, 
is no doubt of very great value in assisting to maintain 
the storage at Prospect, but it is a matter for careful 
consideration, whether this outweighs the advantages 
which the other scheme possesses, of being able to convert 
18,000 million gallons of the water impounded at Cataract 
reservoir, into water having a pressure if required for fire 
fighting purposes, due to the head of 654 feet at O’Hare’s 
Creek reservoir. 
It is strange that in all the investigations that have been 
made from time to time, the scheme for the high pressure 
service from the Woronora and O’Hare’s Creek should have 
been missed. I have gone to some trouble to look up the 
old reports, but in none can I find any reference to it. It 
4—Sept. 16, 1908. 
