STORMWATER MANAGEMENT AND DRAINAGE MASTER PLAN …msowater.org.my/laravel-filemanager/files/1/SWaM...
Transcript of STORMWATER MANAGEMENT AND DRAINAGE MASTER PLAN …msowater.org.my/laravel-filemanager/files/1/SWaM...
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STORMWATER MANAGEMENT AND DRAINAGE MASTER PLAN
(PISMA)PISMA – Pelan Induk Saliran Mesra Alam
Presented by:
Hjh. Zalilah Binti Selamat
Bahagian Saliran Mesra Alam
Jabatan Pengairan dan Saliran Malaysia
SWaM2017
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Introduction1
PISMA2
PISMA Output3
Conclusion5
OUTLINE
RMK 11 PISMA Status4
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Flood
• Major problem in Malaysia
Landuse For Urbanization
• Forest to agriculture
• Agriculture to urban areas
Increase Flood prone areas
• 29,800 sq.km (about the size of Selangor + Perak)
INTRODUCTION
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TYPES OF FLOOD
Major Flooding the main river overtop and cause
widespread flooding of long
duration
Flash Flood a short duration flood that is very
localized
• Flood condition varies from state to state.
• Flood level varies from 0.2m up to 5m(extreme cases).
• Size of flood <100 ha. to a few thousand ha.
TYPES OF FLOOD
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5
• Usually occur in urban areas
• Caused by short, intense,
localized thunderstorms that
occurs < 3 hours
– Flood water rise almost
immediately during the storm
and water will recede within
6 hours after the rain
FLASH FLOOD DEFINITION
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Flood Prone Areas
Risk based on location
Riverside town
Upstream town
Coastal town
Island town
Highland town
Classification of town based on
National Strategic Stormwater Management Plan (2007)
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SW RISKS ACCORDING TO LOCATION
No. Location Remark
1 Island Towns Affected by tide and shortage of freshwater. Low lying
areas are subject to floods from high tide and possible
inadequate SWM infrastructure
2 Coastal Towns Affected by tide. Low lying areas are subject to floods
from high tide and possible inadequate SWM infrastructure
3 Riverside Towns Low lying areas are subject to flooding from river
overflows and possible inadequate SWM infrastructure
4 Upstream Towns Flood likely caused by inadequacies from urban drainage
5 Highland Towns Steep areas may cause slope failure, erosion and mudflows
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CLASSIFICATION OF TOWNS BY RIVER BASIN LOCATION
Island Towns Coastal Towns Riverside Towns Upstream
Towns
Highland Towns
Penang
Langkawi
Tioman
Pangkor
Johor Bahru
Pontian
Batu Pahat
Muar
Melaka
Port Dickson
Klang
Lumut
Butterworth
Kota Bharu
K. Terengganu
Dungun
Kertih
Kemaman
Kuantan
Mersing
Kluang
Seremban
Kuala Lumpur
Ipoh
Sg. Petani
Alor Setar
Temerloh
Mentakab
Pekan
Tampin
Kuala Kangsar
Kajang
Putrajaya
Gemas
Alor Gajah
Fraser’s Hill
Cameron
Highlands
Genting
Highlands
Frequent Flash Flood
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SHORT, INTENSE LOCALISED THUNDERSTORMS, THE TYPE OF STORM USUALLY EXPERIENCED IN THE EVENING
RAPID AND UNCONTROLLED DEVELOPMENT IN CATCHMENT AREAS RESULTING IN HEAVY SILTATION
OBSTRUCTIONS IN RIVER FLOW SYSTEM THAT REDUCE IN RIVER FLOW CAPACITY
LIMITED AVAILABLE SPACE FOR RIVER IMPROVEMENT WORKS TO HANDLE THE EVER INCREASING FLOOD FLOW DUE TO ESCALATING URBANISATION PROCESS
INSUFFICIENT INTERNAL DRAINAGE SYSTEMS WITHIN THE TOWN AREA UNDERCAPACITY
CAUSES OF FLOODING
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CHANGE IN
LANDUSED AND
FLOOD
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Jalan Bukit Bintang, circa 1950
Jalan Bukit Bintang, circa 2017
Ampang Park, circa 1970
Ampang Park, circa 2017
LANDUSE FOR URBANIZATION
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CHANGES IN HYDROLOGY AND RUNOFF DUE TO DEVELOPMENT
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13
IMPACT OF UNCONTROLLED DEVELOPMENT
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Flow
Time
Flow Characteristics
Rural and Urbanised Catchment
Urbanised
Developed
Rural
Undeveloped
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LATEST FLASH FLOOD OCCURANCE
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LATEST FLASH FLOOD OCCURANCE
pada 15 September 2017
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STORMWATER
MANAGEMENT
AND DRAINAGE
MASTER PLAN
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PISMA
PISMA =
MSMA Concept + Master Plan
• A master plan that will give comprehensive guidance and instruction,
• A comprehensive long-term strategy,
• Compliance with MSMA 2nd Edition
INTRODUCTION TO PISMA
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The development of PISMA is to help solve the problem on flash floods and
develop a master plan on how to effectively handle and overcome the
occurence of flash floods.
The output of this master plan are to:1)Create a master plan for drainage
2)Create a master plan for water
quality
3)Create an infrastructure inventory
system based on GIS
INTRODUCTION TO PISMA
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1
Developers
2
Local
Governments
3
DID States &
Districts
New Development Local Plans Approval &
Retrofitting
PISMA TARGET GROUP
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• Data and Information Collection1
• Topographical and Engineering Surveys and Geotechnical Investigations 2
• Site Investigation and Field Inspection3
• Analyse Existing Conditions4
• Identify Stormwater Issues and Problem5
SCOPE OF WORK OF PISMA
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• Formulate Alternatives6
• Compare Alternatives and Select Recommended Plan7
• Development of Stormwater Management Master Plan8
• Cost Estimates and Benefits9
• Prepare Plan Implementation Program10
SCOPE OF WORK OF PISMA
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PISMA
OUTPUT
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WATER QUALITY MASTER
PLAN
DRAINAGE MASTER
PLAN
ASSET INVENTORY
SYSTEM
1 2 3
Quantity ControlQuality
Control
GIS
Database
PISMA STUDY OUTPUT
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EXAMPLE OF PISMA STUDY (OUTPUT)
EXISTING DRAINAGE
PISMA STUDY PROPOSED SOLUTION
The proposed option can be in:
• Structural approach
(Channelisation, retention pond,
pump drainage and etc.)
• Non-structural approach
(Landuse management & zoning,
Public Outreach Program,
Enforcement (ESCP) and etc.)
Thoroughly studied by the
consultant to identify the most
comprehensive solution for the
flash flood.
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ESCP- CONSTRUCTION QUALITY CONTROL QUANTITY CONTROL
MUDFLOWS SMELLY DRAIN FLASH FLOOD
MSMA CONCEPT IN PISMA (OUTPUT)
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On Site Retention Pond
Wetland
On Site Detention Pond (Dry Pond)
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Filtration StructureOutfall Structure
Silt Fence
Silt Trap
Silt Trap
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11th MALAYSIA
PLAN
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Tebrau dan Plentong
1. Semenyih,
2. Selayang, Rawang dan
Kuang
Cameron Highlands
Kuala Terengganu
1. Sandakan,
2. Lahad Datu,
3. Putatan dan Kinarut
1. Sri Aman,
2. Betong, Saratok, Spaoh & Debak
3. Limbang,
4. Serian
5. Lawas
Kota Bharu
Bagan Datuk
6. Sarikei dan Bintangor
No. State Study Area
1. PerlisKangar, Arau dan Padang
Besar
2. Perak
1. Parit Buntar dan Bagan
Serai
2. Ipoh
3. Manjung, Lumut dan Sitiawan
3. Selangor
1. Klang
2. Sungai Besi dan Seri
Kembangan
3. Bandar Sungai Buloh
4. Kajang
4. Sabah
1. Tuaran, Mengatal dan
Talipok
2. Tawau
5. Sarawak
1. Kuching dan Kota
Samarahan
2. Miri
6. Johor Pasir Gudang
7. Kelantan1. Tanah Merah
2. Pasir Mas
8. Terengganu Dungun
9. Pahang Kuantan
17 STORMWATER MANAGEMENT AND DRAINAGE
MASTERPLAN (PISMA) STUDY HAD COMPLETED
UNTIL 2010
In Progress
Not yet started
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CONCLUSION
Reference for state governments and local
authorities
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Prepared By:BAHAGIAN SALIRAN MESRA ALAM
JPS MALAYSIA