C/A.
72
5.
6.
7.
8.
capacity of 2,118 million gallons, which are fed by 3,222
acres of direct and indirect catchment.
We have made our own estimate of the present main-
tainable yield of these sources and, altogether, it amounts
to 8.25 million gallons a day 8.25 M.G.D.
On the completion of the Aberdeen Works as set out
in Sessional Paper 4/1928 Page II, the total storage will be
increased to 2,408 million gallons and the catchment area to
4,672 acres with an estimated corresponding maintainable
yield of 10 ̊80 M.G.D.
On the completion of the remaining works
J
catchwaters
-only set out in the above-mentioned Sessional Paper, the
total catchment area will become 6,051 acres, and the total
maintainable yield of the Island Works will be 1285 M.G.D.
We are of opinion that with the completion of the
works mentioned in the preceding paragraph, the total resources
capable of economical development will have become exhausted,
and that further supplies must come from the Mainland.
Island Requirements.
9.
The difficulty of forecasting the water requirements
is not lessened by the knowledge that in only four complete
years -1908, 1919, 1920 and 1921 since 1906 has a full and un-
restricted supply been given, due to the fact that the con-
struction of new works has never kept pace with increasing
consumption and at times has been seriously in arrears.