Rainfall & Yield
SUPPLY
Chief Engineer:
A. W. P. Cox, A.M.I.C.E., A.M.I.Mun.E.
7.02. The rainfall for the year recorded by the Royal Observatory was 91.41 inches and the average of the raingauges located in Waterworks catchment areas was 96.55 inches. This compared with 39.3 inches recorded last year and an annual average of 84.75 inches. The following tables of yields in million gallons serve to illustrate dramatically the improved situation compared with 1963-64:
1963-64 1964-65 Yields from catchment areas ... 5,603.6 Pumped from the River Indus ... 27,522 Extracted from the Muk Wu Wells 1,778.3 3,611 Imported by Tankers from the Pearl River, 139.1 125 China ... ... ... ... 3,077.3 Imported by Merchant Ships 1,214 2 Received from China by overland pipe line ... 2,470.0 Total 13,085.1 38,085 5,611On the final reckoning the cost of importing 4,288 million gallons from the Pearl River was about $67 million.
Supply from China
7.03. On 22nd April an Agreement was signed with the People's Council of Kwangtung for the supply of a minimum 15,000 million gallons per annum. The water is delivered at a maximum rate of 62 m.g.d. at the frontier near Muk Wu at a price of HK$1.06 per thousand gallons. The new Agreement came into effect on 1st March, 1965. Under the old agreement 5,000 million gallons annually was supplied from the 1st of October each year provided 63" or more of rain fell in the Sham Chun Reservoir Catchment. Because of the drought only 2,589 million gallons were delivered between 1st October, 1963 and 1st October, 1964. With the foreknowledge of the new agreement coming into effect, the rate of extraction from the Sham Chun Reservoir was over 35 million gallons per day when resumed on 23rd November, which was considerably more than in previous years, and for the year a total of 3,813 million gallons was received under the old agreement, and 1,798 million gallons under the new agreement making a total of 5,611 million gallons. It was, there-
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