Sessional_Paper_1928 — Page 72

Hong Kong Supply.

Kowloon Supply.

Colony's Supply.

Hong Kong Filtering.

Kowloon Filtering.

Colony's Filtering.

Hong Kong.

68

COMPARISON OF EXISTING CAPACITIES & ESTIMATED REQUIREMENTS.

It will be seen on comparing figures that in 1928 Hong Kong's estimated production falls short of its estimated requirements by 2.75 mill. gallons per day, and that by 1932 without further works this shortage will have increased to 4.35 mill. gallons per day: figures which speak for themselves.

In Kowloon the estimated production this year exceeds the estimated con- sumption by 1.2 mill. gallons, but this surplus will have practically disappeared by 1932.

Taking the Colony as a whole the total shortage during the current year is estimated at 1.55 mill, gallons per day, a figure which will increase to 4.25 mill. gallons per day in 1932.

The approximate working capacity of the Hong Kong Filter Beds is 9.3 mill. gallons per day, which is 0.7 mill. gallons less than the current year's estimated average daily consumption. An annual daily average consumption of 10 mill. gallons means a daily average during the four hottest months of the year of at least 11 mill. gallons, so that the deficiency in filtering capacity on the Island is really 1.7 mill. gallons per day, and will rise to about 3.7 mill. gallons per day in 1932.

The approximate working capacity of the Kowloon Filter Beds is 7.9 mill. gallons per day (on completion of Shing Mun Filters) while the highest average daily consumption during 1927 over a period of one week was 4.16 mill. gallons, or, say, 4.5 mill. gallons per day in 1928.

There is therefore a surplus filtering capacity of 3.40 mill. gallons per day, but this surplus figure will dwindle to about 2.3 mill. gallons in 1932.

Taking the Colony as a whole there is a surplus filtering capacity of 1.70 mill, gallons per day, but by 1932 this surplus will have disappeared and there will be a deficiency of filtering capacity of 1.00 mill. gallons per day,

POSSIBLE WATERWORKS EXTENSIONS.

The following is a list of possible reservoirs and catchwaters on the Island, and below are explanatory notes :-

RESERVOIRS.

(a) Tytam Valley

(b)

""

!!

(c) Tytam Bay

(d) Pokfulam Valley

(e) Little Hong Kong Basin

(f) Taikoo Areas (Private)

(g) Aberdeen Valley (Private)..

(a) Mt. Parker

capacity 70 mill. gallons.

CATCHWATERS.

(b) Mt. Pottinger (Three)

(c) Tytam Tuk East... (d) Dragons Back (West) (e)

(f) D'Aguilar

"

(East)

40

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""

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22

2,500

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178

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area 380 acres.

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620

240

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