86 METHOD BY WHICH A PURE WATER SUPPLY, ETC. 



Board of Water-works temporarily increase the water-supply 

 from other sources than Enoggera so as to be independent of 

 the latter and then proceed to reconstruct. 



The method suggested is to cut gradually a trench into the 

 by- wash to drain off all the water ; to make a wall of rough 

 stone and concrete, at least six feet high, round the water's edge 

 and back this with earth dug from the shallow parts of the lake 

 so as to make a gradual ascending slope from the top of the wall 

 to the hill sides ; otherwise, water would lodge between the wall 

 and the hill ; plant the bank with Buffalo-grass ; clean out logs, 

 stumps, vegetation, and fish ; finally, strengthen and raise the 

 dam and build up the by- wash. The lake would then hold 

 sufficient water for the requirements of Brisbane for some time 

 to come ; the water would be pure and every drop available if at 

 any time pumping had to be restored to. The other reservoirs 

 could then be abandoned until the growth of the city necessitated 

 a further increase of water. There should be a space cleared at 

 least fifty yards wide, all round the lake, fenced in and planted 

 Avith Buffalo-grass ; the grass should never be cut nor grazed by 

 cattle ; it would serve to prevent leaves from the adjacent land 

 being washed by rain or blown in the reservoir. 



Deception Bay, July 1899. 



