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T. W. KEELE. 



square miles greater than that on the Cordeaux. It would 

 not, however, be wise, without further information as to its 

 capacity for storage, to assume a greater storage than the 

 Cordeaux, namely, 15,859 million gallons. This, however, 

 would be 9,500 million gallons less than the reserve storage 

 I have already advocated, namely, 600 days' supply, and I 

 would here strongly advise that it should come from the 

 Woronora and 'Hare's Creek Reservoirs, the sites for 

 which have already been surveyed, and their capacity as- 

 certained to be 7,565 millions on the Woronora and 2,000 

 millions on the O 'Hare's Creek. A tunnel ten miles in 

 length would be necessary to convey the combined waters 

 to the existing canal at the Sugar Loaf. By the construct- 

 ion of the tunnel, the drainage from 85 square miles of 

 country, the discharge from which equals 23,899 million 

 gallons in a year of mean rainfall, would be added to the 

 present catchment area of 350 square miles, making a total 

 of 435 square miles. If these works were commenced next 

 year they would, together with the Avon Dam (to be com- 

 menced in 1921), be completed in 1924 and ready to com- 

 mence duty in 1925, when the population would have in- 

 creased to 1,300,823 consuming 60 gallons per head per day. 

 The daily consumption would amount to 78,049,380 gallons, 

 and, allowing for evaporation and other losses from the six 

 reservoirs, the total loss would amount to 108,049 millions 

 daily. The reserve storage would, therefore, amount to 

 623 days' supply, or 1.7 years. 



I will not weary you by taking you step by step along 

 the course necessary to determine the storage capacity that 

 will become necessary from year to year as the increase of 

 population makes its demand for water. We cannot afford 

 to live from hand to mouth any longer. 



Enough has been said to impress upon you the absolute 

 necessity of forecasting our future requirements and mak- 



