brought into service. The supply hours were reduced to 10 per day on the 9th November and again to 8 hours per day on the 31st December. 8 hours supply was maintained throughout the remainder of the year, though full 24 hours supply was given over the holiday periods of Christmas and the European New Year. The anticipated consumption for the Chinese New Year's Eve, would have surpassed the filtration capacity, and the full supply was therefore given during Chinese New Year's Day (which fell on the 5th February) and continued until mid-night on 7th February.
Rainfall
SUPPLY
10.05. The rainfall recorded at the Royal Observatory was 87.838 inches, being 2.449 inches more than the annual average of 84.744 inches. The average recorded by the 15 raingauges located in the various waterworks catchment areas was 89.996 inches.
Sham Chun and Indus River Water
10.06. Yields from these sources were pumped to the Tai Lam Chung Reservoir with the result that the capacity of the filters designed to treat only the natural yield of Tai Lam Chung was insufficient to treat all the additional water. The balance was, however, restored by using the main laid between the Jubilee Reservoir supply conduit and the Tsuen Wan Filters, to pump some of the Tai Lam Chung yield to South Conduit for filtration at Shek Lei Pui. At the same time the draw-off from Jubilee and the Kowloon Group of reservoirs was thus reduced.
Storage
10.07. Water in impounding reservoirs at various dates was as follows:
Date Quantity in million gallons Remarks 1st April, 1961 5,106 49% full 1st July, 1961 5,546 53% full 1st October, 1961 10,469 All reservoirs full 1st January, 1962 7,194 68.6% full 31st March, 1962 4,263 40.8% full10.08. All reservoirs were full and overflowing simultaneously for a total of 14 days.
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brought into service. The supply hours were reduced to 10 per day on the 9th November and again to 8 hours per day on the 31st December. 8 hours supply was maintained throughout the remainder of the year, though full 24 hours supply was given over the holiday periods of Christmas and the European New Year. The anticipated consumption for the Chinese New Year's Eve, would have surpassed the filtration capacity, and the full supply was therefore given during Chinese New Year's Day (which fell on the 5th February) and continued until mid- night on 7th February.
Rainfall
SUPPLY
10.05. The rainfall recorded at the Royal Observatory was 87.838 inches, being 2.449 inches more than the annual average of 84.744 inches. The average recorded by the 15 raingauges located in the various waterworks catchment areas was 89.996 inches.
Sham Chun and Indus River Water
10.06. Yields from these sources were pumped to the Tai Lam Chung Reservoir with the result that the capacity of the filters designed to treat only the natural yield of Tai Lam Chung was insufficient to treat all the additional water. The balance was, however, restored by using the main laid between the Jubilee Reservoir supply conduit and the Tsuen Wan Filters, to pump some of the Tai Lam Chung yield to South Conduit for filtration at Shek Lei Pui. At the same time the draw-off from Jubilee and the Kowloon Group of reservoirs was thus reduced.
Storage
10.07. Water in impounding reservoirs at various dates was as
follows:
Date
1st April, 1961
1st July, 1961 ...
1st October, 1961
1st January, 1962
Quantity in million gallons
Remarks
5,106
49% full
5,546
53% full
10,469
All reservoirs full
7,194
68.6% full
4,263
31st March, 1962
40.8% full
10.08. All reservoirs were full and overflowing simultaneously for
a total of 14 days.
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