General
PLANNING DIVISION
Chief Engineer:
T. H. TOMLINSON, B.Sc., C.Eng., M.I.C.E.
Lr Hin-wing, B.Sc. (Eng.) (Lond.), C.Eng., M.I.C.E. (Acting)
8.49. This Division deals with the preparation of outline proposals for providing water to new development throughout the Colony and also for the planning of major water schemes in association with consulting engineers.
Hydrological Section
8.50. The principal function of this section is the collection and study of hydrological data from catchments in the Colony in order that accurate assessments of yield may be made for any part of the Colony. Observations were taken at 120 rain gauging stations, 16 stream gauging stations, eight reservoir overflow stations and two evaporation stations. During the year the construction of a new weir at Nim Wan was completed to provide information on yields in the north-west part of the Colony.
8.51. Sets of generalized flood pumping curves were prepared showing the amounts of water that can be pumped at any site with varying pump capacities. A major revision of the report 'Gross Yield of Hong Kong Reservoirs' was almost completed by the end of the year. A study was made on the possible effects of afforestation on stream flow and a technical report on topics of 'The Effect of Afforestation on Stream-Flow in Hong Kong' was completed. The 1966 and 1967 hydrological data books were prepared for publication and a study was being made of hydrological data for a possible water scheme on the Sai Kung peninsula.
Water Resources Survey Section
8.52. The Water Resources Survey is being carried out in conjunction with Messrs. Binnie and Partners. Work continued on preparing regulation and operation rules for the management of water stocks and supplies with the adoption of computer methods for regulation studies. The 'Water Resources Survey Final Report' and the 'Report on Desalting' were received and technical notes on water demand and waste detection were revised and updated prior to finalization. Investigations were conducted on the demands and regulated yields for all
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