581
The temporary pump for pumping up to the gauge basin the waters of the streams in the lower part of the Tytam Valley was in operation from the 1st January to 18th April and yielded 65,806,000 gallons, use being again made, so far as the capacity of the pump permitted, of the water stored in the low-level reservoir mentioned in previous reports. This reservoir and the contingent pumping machinery, mains, etc., though not actually completed, were sufficiently advanced to render the water stored in the former available for the supply of the City by the 1st October, from which date it appears in the tabulated statements appended to this report under the heading Tytan Intermediate Reservoir. In view of the fact that the permanent pumping plant and mains would become available before the next dry season, the temporary pump was dismantled in May, the rising main from it being taken up. Further recourse to pumping during the year was found to be unnecessary owing to the copious rainfall which occurred during September and October, practically 194 and 9 inches of rain respectively falling during the months mentioned.
A comparative statement of the total rainfall recorded at various points during the year is given in the following table, the figures for the Public Gardens being kindly supplied by the Superintendent of the Botanical and Forestry Department :-
Month.
January, February,
March,
April,
May,
June,.
July,
August....
September,
October,
November,
December,
Totals,
Kowloon Observa- tory.
Inches.
Public Tytam Pokfulam Gardens. Reservoir. Reservoir.
Inches.
Inches.
Inches.
3.445
4.86
3.55
3.78
.165
.20
.00
.12
.335
.89
.13
.23
11.755
12.94
11.95
11.58
11.280
11.79
12.91
11.41
13.170
17.05
15.52
12.44
7.385
7.35
8 47
6.42
14.855
17.40
14.92
13.51
19.475
24.23
16.66
21.35
8.965
12.31
9.91
12.26
1.265
1.41
1.35
.64
1.460
1.76
1.14
.90
93.545
111:69
96.51
95.34
It will be seen that the rains commenced somewhat early, 11.75 inches (Observatory record) having fallen in April and that the wet season closed exceptionally favourably from a Waterworks point of view with 8.96 inches in October. This is the highest rainfall recorded in October since the year 1894.
The total quantity of water supplied during the year was 1,517,091,000 gallons filtered and 24,968,000 gallons unfiltered making a grand total of 1,542,059,000 gallons or 188,992,000 gallons more than in 1906.
The average consumption of filtered water per head per day under the various condi- tions of supply, with an estimated population of 205,110, is given below:-
Average for whole year,
during period of constant supply,
3)
"
"J
20.3 gallons.
22.2
27
intermittent supply to Rider
Main Districts,
17.0 "
Full details of the consumption, contents of the reservoirs, &c., will be found in Appendices C and D.
The analyses made by the Government Analyst shew the water to have been of excellent quality throughout the year. Bacteriological examinations also gave very satisfac- tory results.
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