FLOOD MANAGEMENT IN THE BRANTAS

AND BENGAWAN SOLO RIVER BASINS,

INDONESIA

Gede Nugroho Ariefianto, M. Zainal Arifin, Fahmi Hidayat,

Arief Satria Marsudi

Asian Water Cycle Symposium 2016

Tokyo, Japan, 1 - 2 March 2016

Jasa Tirta Public Corporationhttp://www.jasatirta1.co.id

Flood Hazards in the Brantas and Bengawan

Solo River Basins

• Flood continues to be the most severe annual disasters

in the Brantas and Bengawan Solo River Basins,

particularly in the tributaries of the Brantas River basin

and the Lower Bengawan Solo River Basin.

• The intensity of flood disasters appears to have

increased during the past few years due to the impact of

urbanization, industrialization, climate change and

watershed degradation.

• Floods in the Brantas and Bengawan Solo River Basins

cause devastating losses to human lives and livelihoods,

and also seriously impede economic development in

East Java Province.

Floods in the Brantas and Bengawan Solo River

Basins in February 2016

Floods in the Brantas and Bengawan Solo River

Basins in February 2016

Flood Control in the Brantas and Bengawan Solo

River Basins

• Prior to the 1990s, large-scale structural measures

were adopted as structural measures for flood

control in the basins.

• The construction of major dam and reservoirs can

lead to better regulation of the flow regime in

mainstream of Brantas and Upper Bengawan Solo.

• Development of large dams in the Bengawan Solo

River basin for flood control encounter social and

environmental problems.

Flood Control Structures in the Brantas River Basin

Flood Control Structures in the Bengawan Solo River Basin

Flood Management in the Brantas and

Bengawan Solo River Basins

• Floods can’t be prevented totally in the Brantas and

Bengawan Solo River Basins.

• Flood control has been shifted towards flood

management.

• The resilience of community to live in harmony with

floods such as community service and empowerment of

society is the most important component.

• Need to develop non structural measures such as

provision of EWS and flood hazard mapping and risks

guides, raising awareness, capacity building, education

and training, as well as institutional setting.

Community Based Flood Early Warning System

• Early Warning System is a key element in reducing

flood disaster risks in the Brantas and Bengawan Solo

River basins.

• It provides people with sufficient time to evacuate and

protect their property from an impending hazard.

• The CBFEWS in the basins provides community and

disaster risk management agencies with advance

information on the risks that can be readily translated

to disaster prevention, preparedness response actions

against loss of lives and injuries.

• The system promotes a sense of ownership, hence it

is easier to sustain.

Community Based Flood Early Warning System

Community Based Flood Early Warning System

Community Based Flood Early Warning System

Hourly Weather Prediction Information

Real time data collected

by AWS and AWLR

Early Warning

Flood Early Warning Early Action System (FEWEAS)

in the Bengawan Solo River Basin

Desain Portal Interface

Rainfall Prediction Interface

Questionnaire Interface

Flood Prediction Interface Android Interface

THANK YOU VERY MUCH