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THURSDAY, NOVEMBER 24, 1988
STUDY ON LAND DRAINAGE AND FLOOD CONTROL STRATEGY
A $9 MILLION CONSULTANCY CONTRACT WAS AWARDED BY THE CIVIL ENGINEERING SERVICES DEPARTMENT TODAY (THURSDAY) FOR STUDYING THE PROBLEMS OF LAND DRAINAGE AND FLOOD CONTROL IN THE TERRITORY.
THE TERRITORIAL LAND DRAINAGE AND FLOOD CONTROL STRATEGY STUDY PHASE I WILL BEGIN LATER THIS MONTH AND TAKE 13 MONTHS TO COMPLETE.
SPEAKING AFTER SIGNING THE CONTRACT ON BEHALF OF THE DEPARTMENT, THE DIRECTOR OF CIVIL ENGINEERING SERVICES, DR K.F. NIP, SAID THE GOVERNMENT WAS UNDERTAKING A COMPREHENSIVE STUDY WHICH WOULD LEAD TO THE FORMULATION OF A TERRITORIAL LAND DRAINAGE AND FLOOD CONTROL STRATEGY.
DR NIP SAID HIS DEPARTMENT HAD IDENTIFIED THE MAIN CAUSES OF FLOODING, WHICH INCLUDED:
-
BLOCKAGE OF GULLIES AND LAND DRAINAGE BY RUBBISH, VEGETATION;
DEBRIS OR
FLOW DEPTH REDUCTION OF LAND DRAINAGE DUE то NATURAL SILTING OR ANIMAL WASTE;
INTERFERENCE TO LAND DRAINAGE PATTERN OR REDUCTION OF FLOOD STORAGE CAPACITY DUE TO UNCONTROLLED FILLING OF LOW LAND;
STRUCTURAL OBSTRUCTION ΤΟ STORMWATER DRAINS OR WATER COURSES;
LOW-LYING AREA AFFECTED BY TIDE AND SURGE EVEN WITHOUT RAIN;
INADEQUATE LAND DRAINAGE, 1.E. UNABLE ΤΟ DRAIN AWAY THE RAIN WATER AT LOW TIDE.
HE APPEALED TO MEMBERS OF THE PUBLIC TO REFRAIN FROM FURTHER DUMPING OF RURBISH, DEBRIS AND ANIMAL WASTE INTO THE STORMWATER DRAINAGE OR NATURAL STREAM COURSES AS THESE WERE NEVER INTENDED FOR SUCH PURPOSES.
DR NIP SAID THE CONSULTANCY STUDY WOULD LOOK INTO:
(I)
A
TERRITORY-WIDE STUDY ог LAND DRAINAGE ENABLING CATEGORISATION INTO HIGH, MEDIUM AND PRIORITY AREAS IN RESPECT OF FLOOD RISK PROTECTION SOCIAL-ECONOMIC CONSEQUENCES OF FLOODING;
CATCHMENTS
1.OW
AND
(II)
PROBLEM OF
AN ASSESSMENT OF THE EXISTING TECHNICAL STANDARDS OF LAND DRAINAGE DESIGN, WITH PARTICULAR REFERENCE TO THE TIDAL-SURGE EFFECTS AT THE LAND DRAINAGE
OUTFALLS;
/(III) THE DEVELOPMENT .............
E