23
In
The total yield of the Shing Mun River as measured by the Recorder and V. Gauge at the Upper intake was 2883.4 million gallons as compared with 4017.86 million gallons last year. In addition 98.12 million gallons were obtained from the Needle Hill stream intake. The pumps below Pineapple Pass worked on 228 days during the year and delivered 53.78 million gallons, equivalent to 236,000 gallons for each working day. During the year 1782.69 million gallons were delivered from the Shing Mun Valley through the Tunnels into the Reception and Byewash Reservoirs, but a percentage of this quantity could not be stored and ran to waste. The minimum monthly yield was in March when the quantity delivered was 52.50 million gallons.
The total quantity filtered by the Paterson Filtration Plant during the year was 1469.97 million gallons, 396.92 million gallons of which were supplied to Hong Kong.
The total quantity of water supplied during the year was 2051.84 million gallons (excluding 101.49 million gallons supplied to Water Boats at Lai Chi Kok), which gives an average daily consumption of 5.62 million gallons or 18.0 gallons per head based on an estimated population of 316,000. Details are given in Table IX.
The quantity of water stored in the impounding reservoirs on 1st January was 531.67 million gallons and a minimum of 209.48 million gallons was reached on 29th May.
The reservoirs were at or above their permanent overflow levels for the following periods:
Reservoirs Capacity to permanent overflow level (Million Gallons) Overflow Periods Kowloon 352.50 166 days at various times between 1st January and 31st December Kowloon Byewash 185.50 31 days at various times between 13th September and 7th November Shek Li Pui 116.10 69 days at various times between 4th August and 11th November Shing Mun Reception 33.15 186 days at various times between 9th January and 31st DecemberThe quantity in storage at the end of the year was 653.37 million gallons.
There were 117 street fountains in use at the close of the year.