CO129-319 - Governor Sir Blake - 1903 [10-11] — Page 44

CO129 Colonial Office Hong Kong Records 理藩院香港檔案 All

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.YTSJ97582 Irincic di

Maximum contents of Tytam Reservoir,

DO.

Do.

DO.

00.

DO.

DO.

Pokfulam Do......

407,000,000.

70,400,000.

Tytam Byewash Reservoir...... 30,000,000.

Wongneichung DO......

Yield of streams intercepted by reservoirs,

conduits, &c., say

33,900,000.

100,000,000.

Yield of streams rendered available by pumping

from Tytan Tuk streams, $8у................................................

Total

100,000,000.

741,300,000.

6. The Byewash Reservoir and the Fumping Plant for rendering available

the dry-weather flow of the Tytan Tuk streams are practically completed and

are therefore referred to as existing works.

7. Assuming the daily consumption at 4 million gallons, the existing

works may be said to afford 185 days' supply. Under ordinary circumstances,

the daily consumption would require to be estimated at a higher figure, but,

with the introduction of rider-mains, it should be possible to keep it well

within the quantity stated during the next few years notwithstanding the

constant increase in the population. As some time must elapse before the

rider-mains can be introduced, however, it is advisable not to assume too

low a figure.

8. After full investigation, I now propose to undertake the construction

of a dam on the site (No.4) referred to in Mr Cooper's report of the 9th May 1896, (vide plan). By increasing the height of the dam to the extent of

20 feet beyond what he proposed its impounding capacity will be raised from

100 million gallons to 194 millions, a quantity which the pumping engines

now on order will be capable of dealing with, in addition to the yield of

the streams already taken into account. This will add 48 days' supply to

that already available, bringing the total up to 233 days' supply of 4

million gallons.

9. This proposal will, I feel sure, commend itself to Mr Chadwick. The

advantages of it are as follows:-

(1) The site is a very favourable one for the construction of a dam.

(2) It can be undertaken at once.

(3) It will not interfere with any existing or proposed works,

(4.)

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