8 
beings to drink, being much impregnated with sulphuretted 
hydrogen, probably from decomposition of iron pyrites in the 
soil and rock. I believe any amount of irrigation might be 
carried on in this neighbourhood: there is no deficiency of 
water for that purpose. 
I should say there is no plan mentioned by Mr. Gregory 
comparable with that from the north and main heads of Moggill 
Creek, costing about £50,000 each and no pumping required, 
being about 280 feet high and able to gravitate down into the 
Enoggera Reservoir, and the two able to supply 1,000,000 
gallons per diem at least. No doubt this is the best water 
obtainable from, any quarter, and at far the least cost. It is 
said, and probably with truth, that in a few years the 2,000,000 
gallons daily from Enoggera and the two heads of Moggill Creek 
will not be enough for our fast rising population. In ordinary 
seasons there might be sufficient, but for unusual dry seasons, 
say three months out of the year, more is required. My idea is, 
that in those unusual seasons, certainly not required at present, 
a steam-engine be placed on Brisbane River about Ugly or 
Kholo Creek, and in those very dry seasons, or perhaps ten years 
hence, water may be forced by pipes about four (4) miles into 
the head of Moggill main creek. I think such a supply is 
feasible, and would suffice for the present generation — in fact, 
even after. The expense of such a plan, as it is in operation for 
only three months out of the year, and is only for four miles, 
would be less than half of what Mr. Gregory states as the cost 
of the Upper Brisbane supply. It has other great advantages — 
that the water from Upper Brisbane, not most excellent in 
quality, could be lifted to a higher, cooler, and deeper reservoir 
at Moggill, and there exposed to air, in at least three different 
reservoirs, before going to Brisbane, and thus be rendered quite 
fit for use. In the large London waterworks there are always 
several large purifying reservoirs, which can be changed and 
cleansed as often as needed. In making reservoirs at Moggill, 
this should be borne in mind. The reservoirs near London are, 
of course, watertight, and the Thames water used is allowed to 
settle in one or two before use ; and as there are several reser- 
voirs, some one or two are cleaned in their turn. 
With the present Enoggera improved if possible, the two 
Moggills, with plenty of exchangeable reservoirs, and in dry 
weather Upper Brisbane water pumped up. I don’t think we 
shall have anything to dread either for quantity, quality, and 
certainty of supply. 
Of course, all the necessary area of land for collecting and 
storage of water on Moggill heads should be reserved. 
