Department of Civil Engineering University of Malaya

Course Code :KAEA 2155

Course Name :Water Resources

Chapter 10 :Stormwater Management Manual/

Manual Saliran Mesra Alam (MSMA)

Prepared By :AP. Dr. Lai Sai Hin

Jalan Sultan Ismail

Flood

Dataran Merdeka

Area

Jalan Dang Wangi

Jalan Melaka near Masjid Jamek

station

Flood in Kuala Lumpur on 13 June 2007

Flood

Flood in Kuala Lumpur on 3 March 2009

Jabatan Pengairan dan Saliran

Flood Mitigation strategies

Curative

Preventive

Curative

• River Widening and Deepening

Flood Mitigation Strategies

River Widening and Deepening

Curative

• River Widening and Deepening

• Bunding

Flood Mitigation Strategies

Bunding

Batu River Improvement Works: Construction of Levees and Bunds

Curative

• River Widening and Deepening

• Bunding

• Flood Mitigation Reservoir

Flood Mitigation Strategies

Klang Gate

Dam

Dam height increased by 3 m

to provide additional storage

Batu Dam

Curative

• River Widening and Deepening

• Bunding

• Flood Mitigation Reservoir

• Flood Retention Pond

Flood Mitigation Strategies

Sg. Batu Flood Retention Pond

Curative

• River Widening and Deepening

• Bunding

• Flood Mitigation Reservoir

• Flood Retention Pond

• River Diversion

Flood Mitigation Strategies

Curative

• River Widening and Deepening

• Bunding

• Flood Mitigation Reservoir

• Flood Retention Pond

• River Diversion

• Pump House

Flood Mitigation Strategies

Source: Abraham, 2008

source: DID

Curative

Flood Mitigation Strategies

Expenses

Allocation for Flood Mitigation Projects

Malaysian Plan

RM

(m

illi

on)

Expenses for Flood Mitigation Projects

Rancangan Malaysia / Malaysian Plan Perbelanjaan ( Million RM)

Rancangan Malaysia ke 7 (1996-2000)

Rancangan Malaysia ke 6 (1991-1995)

Rancangan Malaysia ke 5 (1986-1990)

Rancangan Malaysia ke 4 (1981-1985)

Rancangan Malaysia ke 3 (1976-1980)

Rancangan Malaysia ke 2 (1971-1975)

850

449

210

164

56

16.5

Mil

liom

Expensed for Flood Mitigation

0

1000

2000

3000

4000

5000

6000

RM2 RM3 RM4 RM5 RM6 RM7 RM8

Proposed Budget

Flood Mitigation Strategies

Curative

Preventive

More Infiltration Less Runoff

Less Infiltration

More Runoff

Impact of Development

Development

0 40 %

Surface Runoff, Q

Increase 190 %

Flow Velocity, V

Increase 2x

New Approach

Environmental Friendly

Drainage System

– Rapid discharge

Conventional Method

Rapid discharge

KAEDAH LAMA

Control at Source, attenuated flow

New Approach

Reduce of Surface Runoff through

• Storage

• Infiltration

• Attenuated flow

New Approach

• Storage

New Approach

• Storage

– Retention Pond

New Approach

• Storage

– Retention Pond

– rainfall harvesting

New Approach

• Storage

– Retention Pond

– rainfall harvesting

– Subsurface Modular Tank

New Approach

Tanki Modular

• Storage

• Increase of Infiltration

New Approach

• Storage

• Increase of Infiltration - gravel drain

New Approach

Gambar 2 : Sistem Penyusupan di keliling Rumah

Gravel Drain

• Storage

• Increase of Infiltration - gravel drain/ Swale

- pervious pavement

New Approach

• Storage

• Increase of Infiltration - gravel drain/ Swale

- pervious pavement

- Subsurface Conveyance/ Buried Drains

New Approach

Subsurface Drainage

New Approach

• Storage

• Increase of Infiltration

• Attenuated Flow

New Approach

• Storage

• Increase of Infiltration

• Attenuated Flow - Swale

Swale

Samples of Environmental

Friendly Drainage System

Urban Stormwater Management Manual

For Malaysia

Explained the

concept of Control

at Source

Provide Guidelines

Provide Examples

MSMA (DID, 2000)

MSMA2 (DID, 2012)

MSMA2

Advantages

Environmental Friendly

Advantages

Environmental Friendly

Safety

Advantages

Environmental Friendly

Safety

Avoid Accumulation of garbage

Advantages

Environmental Friendly

Safety

Avoid Accumulation of garbage

Slow Down/ reduce runoff to river

Advantages

Environmental Friendly

Safety

Avoid Accumulation of garbage

Slow Down/ reduce runoff to river

More empty space/ green area

Thank You