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Extensions.
2nd Section Works.
Access Road.
Dam No.1.
of all works now under construction, so that further
extensions are necessary.
The next extension to be undertaken to give any considerable quantity of water would appear to be the Second Section of the Shing Mun Scheme which was calculated to give an additional supply of about four million gallons per day
and cost $4,750,000.
The Second Section of the Shing Mun Scheme as set forth in my original report comprises the following works:-
Access Road (Continuation).
Dam No.1 (Shing Mun Village Dam).
Dam No.2 (Shing Mun Gorge Dam).
e
Dam No.2A (Neddle Hill Dam).
Catchwaters discharging through Lead Mine Pass.
Filter Beds (Extension).
24" Pipe line (Duplication).
The lay out of the Access Road is contingent on
the number, size and position of the reservoirs to be built
so cannot be dealt with until the position and size of the
reservoirs are settled.
Dam No.1 or Shing Mun Village Dam. This Dam from
the first has been somewhat problematical owing to its great
length in comparison with its storage capacity, and surface
indications on the West side were not favourable. The trial
pits and cuttings which have been made show the rock to be
rather deep on the West Side but fairly near the surface on
the East Side.
Drawing No.4 shows the estimated foundation levels
and sections for a Dam at this site having a Top Water Level
of 710 A.0.D. a maximum depth of water of 150 feet and a
maximum depth to bottom of foundations of 168 feet.
Such a
dam would impound approximately 1,000 million gallons and
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