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RESERVOIRS.
Reservoir Sites (a) and (b), estimated capacities 70 and 40 million gallons respectively, are situated in the upper Tytam Valley within the catchment area of the present Tytam (Upper) Reservoir.
These dams being at a level of 750 above 0. D. approximately would be very difficult and costly to develop, would foul Tytam, The Byewash and Tytam Tuk Reservoirs during construction, while Tytam being already under-catchmented, they would not be economical from a water point of view.
Reservoir Sites (a) & (6).
Reservoir Site (c) of 700 million gallons estimated capacity is situated in Reservoir Tytam Harbour below the existing Tytam Tuk Dam and is easily recognizable Site (c). by the caissons protruding above the sand, like round bridge piers.
This site was investigated about 1904, but a rock foundation for the dam was not found until a depth of 65 feet below 0. D. had been reached.
It was again later considered by the late Mr. Jaffé, who ultimately abandoned it for the site of the present Tytam Tuk Dam which has now cut off a large portion of the original basin of the reservoir. . As the site is below sea level, most difficult and costly coffer dams above and below the site would be necessary during construc- tion. The cost of the Dam would be in my opinion out of all proportion to the supply gained, particularly when it is remembered that all the water from this Reservoir would require to be pumped nearly 400 feet.
Reservoir Site (d) is situated directly below the existing Pokfulam Re- servoir, the dam site being at the road bridge over the stream taking the over- flow from the Pokfulam Valley and outfalling at Waterfall Bay.
The reservoir is small, having an estimated capacity of 78 million gallons while its construction would mean the resumption of Pokfulam Village. The Dairy Farm and other buildings and the realignment and reconstruction of about half a mile of the main Pokfulam Island Road. These resumptions which would greatly increase the cost of the reservoir are considered undesirable for other
reasons,
Reservoir Site (d).
Reservoir Site (e) is the basin on the South side of the Island containing the Reservoir
Site (e). village of Little Hong Kong and bounded on the North by Bennets Hill and Mt. Cameron and on the South by Brick Hill, two dams being necessary, one across Stanton Creek near Aberdeen and the other at the Brickworks close to Deep Water Bay.
This reservoir which is large has very little catchment area for its size, but the overflows from the Aberdeen and Wongneichong Reservoirs could be diverted into it, considerably increasing its productive capacity.
This is the only site left on the Island for a reservoir of any considerable size, but in the past it has been considered inadvisable in the public interests to alienate this valuable flat piece of country from the use of the public. For this reason the site has never been investigated, but in view of the great lengths of the Dams, the considerable resumptions and the heavy contingent works neces- sary, the reservoir would be costly while all the water would require to be pumped, adding further heavy recurrent charges.
PRIVATE SUPPLIES.
Taikoo Catchment Area is situated immediately South of the Taikoo Sugar Taikoo. Refinery and Dockyard on the slopes of Mt. Butler and consists of 692 acres, on which stand three Reservoirs of 137 million gallons, 11 million gallons and 30 million gallons capacity respectively. The water rights, which are held by Messrs. Butterfield and Swire, are capable of some further development, but it is con- sidered by the lease-holders that all water procurable is necessary for their busi-
ness.