The greatest storage reached was 1,867.35 million gallons on 13th October, equivalent to 79% of the possible maximum.
The rainfall for the year recorded at the Royal Observatory (Table X) amounted to 55.36 inches, which, with one exception, is the lowest rainfall recorded in a calendar year since observations commenced in 1884.
It is interesting to note that the officially recorded rainfall for the year at the neighbouring Portuguese colony of Macao was 45.11 inches.
Other low rainfall years were: 1895, 45.83 inches; 1901, 55.77; 1898, 57.02; 1933, 62.34; 1912, 68.90. The lowest rainfall ever recorded in twelve consecutive months was, however, 37.27 inches in the months July 1928 to June 1929. The average rainfall for the past 55 years is 84.26 inches.
Total quantity of water pumped from Tytam Tuk reservoir amounted to 1,891.03 million gallons, all of which was pumped by the Simpson engines. This total was more than that of 1937 by 493.67 million gallons. During the year, authority was given to scrap the two Tangye pumps which were installed in 1904 and had become unserviceable, and to replace them by electrically driven centrifugal pumps.
Owing to the low rainfall, the Tytam Tuk pumps worked on 345 days, which left insufficient time for a satisfactory overhaul of all pumping units to be made. The consumption of coal at Tytam Tuk pumping station was 4,428 tons, compared with 3,543 tons in 1937.
The total quantity of filtered water supplied amounted to 5,135.16 million gallons (which includes 1,691.26 million gallons from the mainland) and 63.87 million gallons unfiltered, making a grand total of 5,199.03 million gallons or 76.63 million gallons more than during 1937.
The mainland supply was in operation throughout the year, the average daily supply to the Garden Service reservoir being 4.63 million gallons, or 32.5% of the total Island consumption.
The total quantity of water pumped for consumption in the high level district of the City was 197.73 million gallons, equivalent to an average daily consumption of about 540,000 gallons. 68.62 million gallons were pumped for consumption in the Peak district, giving an average daily consumption of 188,000 gallons.
The pumping plant at Pokfulam Road worked satisfactorily and delivered 259.75 million gallons to the mid-level, high level and Peak districts. The consumption of coal at Pokfulam Road pumping station was 1,941 tons, compared with 1,924 tons in 1937.
The average price of coal, including delivery to pumping stations, was $26.07 per ton, compared with $12.00 in 1937 and $13.14 in 1936.
The turbines and pumping plant at Bowen Road were thoroughly overhauled and delivered an average daily supply of 110,000 gallons to the 650 feet level service reservoir in the high level district.
The turbines and pumps at the eastern filters worked satisfactorily, a daily average of about 106,000 gallons being delivered to the Jardine's Lookout and Middle Gap service reservoirs in the high level districts.
The electrically driven pumps at Middle Gap worked satisfactorily, a daily average of 34,000 gallons being delivered to Mount Cameron service reservoir in the Peak district.
Tabulated statements containing particulars of the quantities of water pumped to the high level district of the city and to the Peak district will be found in Table XI.
Q 11
The greatest storage reached was 1,867.35 million gallons on 13th October, equivalent to 79% of the possible maximum.
The rainfall for the year recorded at the Royal Observatory (Table X) amounted to 55.36 inches, which, with one exception, is the lowest rainfall recorded in a calendar year since observations commenced in 1884.
It is interesting to note that the officially recorded rainfall for the year at the neighbouring Portuguese colony of Macao was 45.11 inches.
Other low rainfall years were: 1895, 45.83 inches; 1901, 55.77; 1898, 57.02; 1933, 62.34; 1912, 68.90. The lowest rainfall ever recorded in twelve consecutive mouths was, however, 37.27 inches in the months July 1928 to June 1929. The average rainfall for the past 55 years is 84.26 inches.
Total quantity of water pumped from Tytam Tuk reservoir amounted to 1,891.03 million gallons all of which was pumped by the Simpson engines. This total was more than that of 1937 by 493.67 million gallons. During the year authority was given to scrap the two Tangye pumps which were installed in 1904 and had become un- serviceable, and to replace them by electrically driven centrifugal pumps.
Owing to the low rainfall the Tytam Tuk pumps worked on 345 days, which left insufficient time for a satisfactory overhaul of all pumping units to be made. The consumption of coal at Tytam Tuk pumping station was 4,428 tons, compared with 3,543 tons in 1937.
The total quantity of filtered water supplied amounted to 5,135.16 million gallons (which includes 1,691.26 million gallons from the mainland) and 63.87 million gallons unfiltered, making a grand total of 5,199.03 million gallons or 76.63 million gallons more than during 1937.
The mainland supply was in operation throughout the year, the average daily supply to the Garden Service reservoir being 4.63 million gallons, or 32.5% of the total Island consumption.
The total quantity of water pumped for consumption in the high level district of the City was 197.73 million gallons, equivalent to an average daily consumption of about 540,000 gallons. 68.62 million gallons were pumped for consumption in the Peak district, giving an average daily consumption of 188,000 gallons.
The pumping plant at Pokfulam Road worked satisfactorily and delivered 259.75 million gallons to the mid-level, high level and Peak districts. The consumption of coal at Pokfulam Road pumping station was 1,941 tons, compared with 1,924 tons
in 1937.
The average price of coal, including delivery to pumping stations, was $26.07 per ton, compared with $12.00 in 1937 and $13.14 in 1936.
The turbines and pumping plant at Bowen Road were thoroughly overhauled and delivered an average daily supply of 110,000 gallons to the 650 feet level service reservoir in the high level district.
The turbines and pumps at the eastern filters worked satisfactorily, a daily average of about 106,000 gallons being delivered to the Jardine's Lookout and Middle Gap service reservoirs in the high level districts.
The electrically driven pumps at Middle Gap worked satisfactorily, a daily average of 34,000 gallons being delivered to Mount Cameron service reservoir in the Peak district.
Tabulated statements containing particulars of the quantities of water pumped to the high level district of the city and to the Peak district will be found in Table
XI.
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