44
OP Y.
Sir,
Enclosure 1.
4257741
Public Works Department
Race
17th October NOV 03
I now have the honour to submit a plan and estimate of the works which
I propose should be undertaken at once in connection with the Tytam Tuk
Scheme for augmenting the City and Hill District Water Supply.
2. The trial works which have hitherto been carried out show that it is
questionable whether the site which appeared so admirably adapted for the
construction of a dam of moderate demensions and having a large Impounding
capacity will be the most favourable, and, with a view to proving this, it
is advisable that works of a similar nature should be carried out on other
sites. Such works have already been put in hand on two alternative sites
somewhat further inland, at either of which, in order to obtain an equival-
ent capacity, a dam of greater length and of greater height above ground
level than at the site originally selected will require to be constructed.
In consequence, however, of the great depth to which the foundations would
extend in the case of the latter and the difficulties which would be
created by having to go to such a depth, it is probable that one of the
alternative sites may be found more economical and may admit of the work
being executed more expeditiously.
3. The carrying out of such an important undertaking, which is designed largely to meet future requirements, will evidently occupy a somewhat
prolonged period, and it is desirable that some works to meet present
requirements should be undertaken at once.
4. Meanwhile, as the gauges recommended by Mr Chadwick have been construc.
-ted at suitable points in the valley, information will be obtained which
will be of much value in more accurately estimating the yield of the drain-
age area than is possible with any information hitherto available.
5. The supply rendered available by the existing works for tiding over the dry season is as follows:-
The Honourable
The Colonial Secretary.
Maximum