General
6.48 The Division is responsible for the investigation, planning, design and construction of all new stormwater drains, sewers and sewage disposal systems in Hong Kong, Kowloon and the New Territories. The Division is also responsible for operation and maintenance of sewage plants.
Construction
6.49 Major works carried out during the year included the construction of main stormwater drains and sewers in Shan Kwong Road as well as a nullah at Staunton Creek, Hong Kong, the construction of a temporary screening plant at Lai Chi Kok, drainage improvement for Wong Tai Sin Resettlement Estate, Kowloon and the implementation of the last two stages of the Shing Mun River Flood Control Scheme in the New Territories.
Planning and Design
6.50 New designs included the extension of sewer and stormwater culverts in Chai Wan, stormwater diversion for the Kennedy Town Telephone Exchange, drainage remedial works in Shau Kei Wan, Hong Kong, sewage-screening plant in Sham Shui Po, Kowloon, Yuen Long sewage-screening plant and a temporary sewage-treatment plant for Sha Tin New Town, New Territories. Planning was carried out for proposed submarine outfalls in Chai Wan and Aberdeen and for a proposed sewage-screening plant in Kwun Tong. To cope with new developments, drainage layout plans were prepared for Cheung Sha Wan Reclamation Area, Lei Yue Mun Village and Cha Kwo Ling.
Studies and Investigation
6.51 Theoretical and field investigations continued for the assessment of spare capacity of sewer systems in Hong Kong, Kowloon and major centres of the New Territories.
6.52 The final reports submitted by the Consulting Engineers, Messrs. J. D. & D. M. Watson, on the Hydrological Surveys of Victoria and Tolo Harbours were accepted and published.
6.53 Bottom drifters were released in May and November 1972 at various locations in the Colony waters to study the movement of bottom sediments in connection with the Hydrological Surveys.
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