that assessments of yield may be made for any part of the Colony. Observations were taken at 122 rain gauging stations, 16 stream gauging stations, 9 reservoir overflow stations and two evaporation stations. During the year one new gauging station was established at Intake D-South, Plover Cove Stage I tunnels, to collect data and actual intake performance during high flows.
10.43. Studies were made on gross yields, collection of water at intakes and effects of irrigation requirements on yield, in connection with the proposed High Island Water Scheme. The 1968 hydrological data book was published during the year.
Water Resources Survey Section
10.44. The Water Resources Survey is being carried out in conjunction with Messrs. Binnie & Partners. The draft reports on 'Regulation Studies' and 'Operation Rules' for the management of water stocks and supplies with the adoption of computer methods for regulation studies were received, revised and updated prior to finalization. Technical notes on water demand and waste detection were finalized.
10.45. Approval was obtained to extend the Water Resources Survey Studies. Investigations continued on the demands and regulated yields for all existing and proposed development including catchments associated with the proposed High Island Scheme. Satisfactory progress was made on a study of water demand and development of resources and further studies were undertaken on the economics of low use factor desalting.
Planning Section
10.46. Work was started in conjunction with Messrs. Binnie & Partners on an examination of the safety of all impounding and service reservoirs with a capacity of more than ten million gallons.
10.47. An investigation of the rate of increase in demand in the Chai Wan area was begun in order to determine the timing of the laying of a proposed new trunk main into the area.
10.48. A report on an interim improvement of the supply of salt water to Chai Wan was started.
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that assessments of yield may be made for any part of the Colony. Observations were taken at 122 rain gauging stations, 16 stream gauging stations, 9 reservoir overflow stations and two evaporation stations. During the year one new gauging station was established at Intake D-South, Plover Cove Stage I tunnels, to collect data and actual intake performance during high flows.
10.43.. Studies were made on gross yields, collection of water at intakes and effects of irrigation requirements on yield, in connection with the proposed High Island Water Scheme. The 1968 hydrological data book was published during the year.
Water Resources Survey Section
10.44. The Water Resources Survey is being carried out in conjunc- tion with Messrs. Binnie & Partners. The draft reports on 'Regulation Studies' and 'Operation Rules' for the management of water stocks and supplies with the adoption of computer methods for regulations studies were received, revised and updated prior to finalization. Technical notes on water demand and waste detection were finalized.
10.45. Approval was obtained to extend the Water Resources Survey Studies. Investigations continued on the demands and regulated yields for all existing and proposed development including catchments associated with the proposed High Island Scheme. Satisfactory progress was made on a study of water demand and development of resources and further studies were undertaken on the economics of low use factor desalting.
Planning Section
10.46. Work was started in conjunction with Messrs. Binnie & Partners on an examination of the safety of all impounding and service reservoirs with a capacity of more than ten million gallons.
10.47. An investigation of the rate of increase in demand in the Chai Wan area was begun in order to determine the timing of the laying of a proposed new trunk main into the area.
10.48. A report on an interim improvement of the supply of salt water to Chai Wan was started.
123
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