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Basin Scale Flood Hazard Mapping Using Hydrologic Model in Sumatera, Indonesia Apip Research Center for Limnology - Indonesian Institute of Sciences (LIPI) The 2nd Symposium on JASTIP Disaster Prevention International Cooperation Research (JASTIPWP4 Symposium), March 2223, 2017, Kihada Hall, Obaku Plaza, Uji Campus, Kyoto University, Japan

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Basin Scale Flood Hazard Mapping Using Hydrologic Model in

Sumatera, Indonesia

ApipResearch Center for Limnology - Indonesian Institute of Sciences (LIPI)

The 2nd Symposium on JASTIP Disaster Prevention International Cooperation Research(JASTIP‐WP4 Symposium), March 22‐23, 2017, Kihada Hall, Obaku Plaza, Uji Campus, Kyoto University, Japan

Outline• Water‐related Disasters in Indonesia• Risk Management & National Agency for Disaster 

Management• Existing Flood Hazard Map• Case Study

• General Approach• Field Measurements• Climate Projection• Hydrological Modeling

4. Further Activity

• Soil Property for Hydrological Modeling• Landuse Changes & Possible Future Landuse Demand• Trend Analysis of Hydrologic Data• Flood Hazard Mapping 

2. Methodology

3. Primary Results

1. Introduction

I INTRODUCTION

Kartamihardja, 2006

Water Resources Potential in Indonesia

River Basins in Indonesia

Main Lakes and Reservoirs In Indonesia

I INTRODUCTION

Problems: Extremely surplus & deficit,Decreasing inland waters ecosystem services

Disaster exists if there is a risk/damage

1. Rapid Onset Type Disasters (flood, drought)2. Slow Onset Type Disasters (environmental problems)

Floods

Droughts

Eco-disasters

I INTRODUCTIONTotal Event

Dominant Type

Source: BNPB (National Agency for Disaster Management), 2010

I INTRODUCTION

National Agency for Disaster

Management

Disaster Mitigation Disaster Response

Hazard Assessment

Vulnerability Assessment

Risk Quantification

Technical Measures

Non‐Technical Measures

Planning Disaster Relief & 

Evacuation

Early Warning System

Emergency Help ‐ Rescue

Humanitarian Assistance

Rekonstruksi

To identify priority locations; basic information for evaluation & improvement of risk disaster management in long‐term

Risk Reductions (i.e., Flood Risk Control)

ResidualRiskTargetedRisk

Flood Disaster Risk Management

PreparednessRisk AnalysisRisk Analysis

I INTRODUCTION

National Spatial Information on Flood Risk

Batanghari River basin

Percentage Change for December

Percentage Change (%) of the Monthly Average Rainfall (December)

Case Study: Batanghari River basin, Sumatera

9

Agriculture Area Urbanized Area

Effects: Community livelihood, important economic sector (agriculture), freshwater ecosystem including peat land

Batanghari River

Batanghari River's Flood1. Seasonal Flood2. Flood Inundation3. Extreme Rainfall enhances

the magnitude of Flood

0

500

1000

1500

2000

2500

0-1hari

1-2hari

2-4hari

4-6hari

6-10hari

10-15hari

15-20hari

20-30hari

Durasi Periode Banjir (hari)

Luas

Are

a Te

rgen

ang

(km

2)

1m 3.5m 6.5m 8.5m 10.5m 14.5m

Flood Duration (Days)

Inun

dated Area

 Over the

 Basin (k

m2)

Batanghari River's Flood

Jambi City, March 15, 2017 (end of rainy season)

I INTRODUCTION

National Disaster Management Agency (BNPB)

Existing Flood Risk Map for District Scale