Sessional_Paper_1911 — Page 173

No. 4.

103 (65)

No. 19

1911

HONGKONG.

REPORT OF PROCEEDINGS

OF THE

PUBLIC WORKS COMMITTEE

at a Meeting held on the 7th December, 1911.

Laid before the Legislative Council by Command of His

Excellency the Governor, December 21st, 1911.

PRESENT:

The Honourable the Director of Public Works, (WILLIAM CHATHAM, C.M.G.), Chairman.

12

the Colonial Treasurer, (ALEXANDER MACDONALD THOMSON).

Mr. WEI YUK, C.M.G.

""

Mr. EDWARD Osborne.

Mr. CHARLES HENDERSON Ross.

"

Tytam Tuk Water Works Scheme-Second Section. (C.S.O. 5758/1911.)

The Chairman read his letter of the 30th September, 1911, addressed to the Honourable the Colonial Secretary, and a report by Mr. JAFFE, Executive Engineer, marked "A", which accompanied it and in which the capabilities of the existing works and the probable future requirements in the matter of water supply were dealt with. The report showed that in years. of deficient rainfall, such as 1901, the existing works, comprising Pokfulam, Wongneichong, Tytam, Tytam Byewash and Tytam Intermediate Reservoirs, would fall short of present requirements to the extent of nearly 500 million gallons. The joint capacity of the reser- voirs mentioned was 747 million gallons, but, under such conditions as prevailed in 1901, the reservoirs might only contain 560 million gallons at the commencement of the dry season, whilst the statistics of recent years showed that during a dry season extending over a period of 280 days, the consumption would amount to 1,270 million gallons. The yield of the streams during the same period would amount to about 227 million gallons so that a storage of 1,043 million gallons was required to ensure constant supply or 4822 millions in excess of that afforded by the present works, or, in round figures, 500 millions.

Probable requirements in the near future, including a supply to Shaukiwan District, which could be most economically supplied from the source uuder consideration, were estimated at about 560 million gallons. The capacity of a new reservoir to meet existing and provide for estimated requirements must therefore not be less than 1,060 million gallons..

When the Second Section of the Tytam Tuk Scheme was formerly under consideration, (1903-04), it was considered important, in selecting the site for the dam, to secure the largest possible drainage area and it was therefore proposed that the dam should be con- structed on what had been designated on the plans as "Site No. 1", which was situated in