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10
11
Kowloon.
I would therefore propose the complete development of this and adjacent areas as completely set forth in Sessional Paper No. 10 of 1927.
Regarding the Little Hong Kong Site, I understand Government is averse to alienating this valuable flat piece of land from the public, but this site would appear to offer the greatest and almost the last possibility of large increase on the Island. The Dam Sites have never been investigated and it is not known therefore if they offer economic possibilities. As however, even if feasible, the dams owing to their length would be costly, and heavy contingent works in the shape of pumps and possibly a tunnel to the North side of the Island would be necessary, I would not suggest the development of this site, at least till all cheaper water either on the Island or Mainland has been obtained.
As Tytam Tuk Reservoir is at present short of Catchment Area, I would propose the construction of the Mt. Pottinger, Mt. Parker, Tytam Tuk (East) and Dragon's Back (East) Catchwaters, all of which would drain into that reser- voir.
I would not propose the construction of either the Dragon's Back (West) Catchwater owing to its length of carry and uneconomical area length ratio, or D'Aguilar Peak Catchwater owing to the unfavourable nature of the ground, cost and length of carry.
The preceding proposals would augment the supply on the Island to the ex- tent of 3.62 million gallons per day, which would still leave a deficiency of 0.63 million gallons per day in 1932.
Of the possible extensions on the mainland, Kun Tong and Rennie's Farm sites are too small for our present needs while Chin Lan Chu would involve the removal of a very large village, which is undesirable except as a last resort.
I would propose the construction of the Kowloon Byewash Dam, which is favourably situated with regard to existing works, requires no contingent works in the way of filters or pumping and could be economically developed in con- junction with the Shing Mun Works.
I would also propose the completion of the 1st. Valley Scheme as set forth in my report dated 8. 4. 24, as this would appear to produce the cheapest water available.
The preceding proposals both in Hong Kong and Kowloon when completed would bring the total supply of the Colony up to 16.53 million gallons per day With the or approx. equal (16.5) to the estimated requirements in 1932. addition of the filters proposed under the Aberdeen Scheme the filtering capacity of the Colony would also approx. equal requirements.
The following table gives in compact form my proposals, with a programme of work and costs :-
PROGRAMME OF WORK & ESTIMATES.
Com- Com- mence. plete.
Estimated Estimated Estimated Production.
Cost.
Work.
Time to
Remarks.
Year.
Year.
construct. Mill. Galls.
per day.
Aberdeen Scheme.
Upper Dam.
East Catchwaters West
"
Supply Pipe to
Pumping Station... Pumping Station to
complete. Rising Mains New Filters... Existing Dam Alter-
ation
Lower Dam Pipe
Line
Bennet's Hill Catch-
water
Alteration to Pok- fulam Reservoir Access Road Resumptions Salvage
Mt. Parker Catch-
water
Mt. Pottinger Catch-
water
Tytam Tuk (East)
Catchwater Dragon's Back (East)
Catchwater
Shing Mun Scheme
Land Pipe Line
900,000
135,000
255,000
270,000
190,000
70,000
180,000
1928 1931
3
2.12
years.
100,000
30,000
497,000
170,000
1929
1932
3
years.
1.5
160,000
180,000
180,000
required to
expenditure.
Section of the Shing Mun
(1st Section).
Rapid Gravity Filters
1927
1928
11⁄2 years.
84,000
Under Construction.
Money
complete
1927 1920
375,000
including 1928
Service Reservoir
(Sheklaipui)
2.51
1928 1930 1928 1929
400,000
300,000*
1929
1931
11
400,000
1559000
3.62
$4,876,000
On completion of these Works I consider the 2nd. Section of the Shing Mun Valley Scheme should be commenced.
cope
To with the increased consumption a consistent annual programme of mainlaying and distribution improvement is necessary both on the Island and the Mainland. Balance Tanks at North Point and Kowloon City are becoming urgent necessities.
Cross Harbour Pipe... H.K. Garden Service
Reservoir......
Carried forward....
*Scheme proposed is for one 12" dia. steel main capable of passing 34 million gallons per day laid on Harbour
bottom without dredging to cost $250.000. The Consulting Engineers Scheme is for two 18" dia. steel mains with a combined capacity of fully 8 million gallons per day laid in a dredged trench and covered with concrete to cost £200,000, or £165,000 if Government assumes responsibility for all risks. +Already included in "Estimate of Capacity" of 5 million gallons per day for the existing supply for Kowloon.
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