Main Report (ISBN : 978-983-3067-29-9)

Researchers:

Prof Dr. Nor Azazi Zakaria <This email address is being protected from spambots. You need JavaScript enabled to view it.>

Prof. Dr. Aminuddin Ab. Ghani <This email address is being protected from spambots. You need JavaScript enabled to view it.>

Mohd Fazly Yusof <This email address is being protected from spambots. You need JavaScript enabled to view it.>

Chang Chun Kiat <This email address is being protected from spambots. You need JavaScript enabled to view it.>

Leow Cheng Siang <This email address is being protected from spambots. You need JavaScript enabled to view it.>

Project Background:

The Study covers a catchment area of 133.5 ha including Institut Perguruan Perempuan Melayu (IPPM) Melaka. This area is surrounded by housing estates and villages, including Kampung Durian Daun Dalam, Kampung Mata Kucing, Taman Peringgit Jaya and Taman Seri Cempaka. The main drain that pass through the catchment area evolved from earth drain at upstream to concrete drain in the institute Perguruan's compound, and exited into earth drain again before discharge to Sungai Melaka.

As a result of undersized local drains and culvert, low platform level in the Study Area, tidal effects, lack of maintenance for the existing drainage system caused by shrubs, sludge and rubbish, flash floods occur in most parts of the study area.  The floods usually last more than 2 hours, and the current facilities can no longer withstand the increasing runoff.  In addition, the contribution of grey water from existing residential areas has caused degradation of water quality in the existing water body, and therefore stormwater management facilities are needed to counter for the flooding faced by the population in this area and to ensure clean discharge water to Sungai Melaka. The Stormwater Management Facilities to be constructed are for an area alongside the main drain which often facing flooding problems.

Existing Stormwater Drainage System in Study Area

Objectives:

• To implement stormwater facilities in the Study Area.
• To upgrade the effectiveness of the existing stormwater infrastructure network.
• To provide control structures against excessive sediment and floatable rubbish in watercourses.
• To construct stormwater collection and conveyance systems.
• To develop the Stormwater Asset Inventory System.

Study Area:

Location of the study area

Scope of Works:

• To acquire relevant data for the purpose of the study.
• To conduct site inspection and field investigation.
• To provide scope of works for engineering survey works and any required storm water quality survey, and to monitor the progress of the survey works.
• To conduct an inventory, analysis and evaluation of the existing drainage system for the planning and detailed design that comprise of important element of runoff quality, quantity control and appropriate drainage system.
• To carry out hydrological and hydraulic analyses using appropriate methods and procedure including the use of advance modeling techniques.
• Formulate concepts and criteria relating to the design of the proposed stormwater management plan options for Client's approval.
• Prepare as built drawings
• To provide cost estimate for the recommended detailed design options that will comprise an important element of stormwater management and full implementation of the proposed drainage plan including land acquisition, planning and construction.
• To prepare tender documents that fulfills all criteria for calling tender.
• Provide works supervision during the period of construction.

Proposed Drainage System:

This project was proposed with the prime objective to set-up an example and showcase of the application of MSMA for urban stormwater management and flood prevention project in Malaysia, particularly in the state of Melaka. It was also aimed to study the existing hydraulic and hydrologic characteristics, as well as the water quality conditions of an urbanized drainage system subjected to flood and tidal effects.

This design system includes several components namely engineered waterway, resizing of culverts, constructed wetland and pumping station. Effects have been made to ensure no recurrence of flooding after the project is completed. Further improvement of water quality is expected with the construction of constructed wetland.

Schematic Diagram for Proposed Drainage System at Study Area 

Typical Section Engineered Waterway (Type 1)

Typical Section Engineered Waterway (Type 2)

Typical Section Engineered Waterway (Type 3)

Typical Section Engineered Waterway (Type 4)

Proposed Constructed Wetland

Detail Outlet Structure at Micropool

Project Scheduling:

• Basically, the project can be divided into four (4) main activities, which are tendering and contract agreement, earthwork and site clearing, construction and project completion.
• Due to cost constraints, list of priorities has been made. It's highly important to install the pumping station to ensure no backwater effect upstream. Similarly, all culverts need to be upgraded. It would be wise to enlarge the present drain to avoid flash flood. 

Current Project Development:

Project Signage		Project Signage
Project Signage		Main Drain Upstream Catchment
Main Drain Upstream Catchment		Constructed Drain at Kg. Bkt. Palah
Constructed Drain at Kg. Bkt. Palah		Constructed Drain at Kg. Bkt. Palah
Constructed Drain at Kg. Bkt. Palah		Construction of Culvert Crossing at Jalan Mata Kucing
Detention Pond Signage		Constructed Detention Pond Area
Downstream of Constructed Detention Pond		Outlet Structure of Constructed Detention Pond
Final Discharge Point to Sg. Melaka		Final Discharge Point to Sg. Melaka

Conclusion:

• The present project is a showcase of the application of MSMA for urban stormwater management and flood prevention project in Melaka and throughout Malaysia. In conjunction with the effort of DID Malaysia and REDAC to promote MSMA throughout Malaysia, the planning and design of the project is based on the concept of MSMA and fulfill the requirement of water quantity and quality control.
• The proposed design system was able to cater minor and major ARI event and effects have been made to ensure no recurrence of flooding in study area after the project is completed. Further improvement of water quality is expected with the construction of constructed wetland.