Second Workshop on Transboundary Flood Risk Management · 2015. 4. 15. · Year-wise Flood Affected...
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Second Workshop on Transboundary Flood Risk Management Geneva 19-20 March 2015 M. Monowar Hossain Executive Director Institute of Water Modelling Email: [email protected] Transboundary Flood Risk Management in Bangladesh
Transcript of Second Workshop on Transboundary Flood Risk Management · 2015. 4. 15. · Year-wise Flood Affected...
Second Workshop on Transboundary Flood Risk Management
Geneva 19-20 March 2015
M. Monowar Hossain Executive Director
Institute of Water Modelling Email: [email protected]
Transboundary Flood Risk Management in Bangladesh
Flood
River Bank Erosion
Flash Flood
Storm Surges/Tidal Flooding
(Source: IWM)
Flood & Flood induced Disasters in Bangladesh
• About 80% of the catchment area is outside the international boundary
• The rivers of Bangladesh drain run-off of upstream catchments of area about 1.72 Million km2
• Most of the rainfall occurs during monsoon. Hence monsoon
flooding here in Bangladesh is a common phenomenon
• The combined effect of these monsoon flooding and climate change induced increased precipitation and sea level rise from downstream will make Bangladesh highly vulnerable to climate change
Ganges Basin Area: 1,087,300 km2
Brahmaputra Basin Area: 543,400 km2
Meghna Basin Area: 82,000 km2
Bangladesh Area:
147,570 km2
GBM River Basins
0
10
20
30
40
50
60
70
1954
1955
1956
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1980
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
(61 %)
(68 %)
Source: FFWC
Year-wise Flood Affected Area in Bangladesh, since 1954
Flood 1988
Flood 1998
Flood Forecast points
29 rivers 54 stations After 2014
www.ffwc.gov.bd
Sureswae
Singra
Flood Forecasting and Warning Centre FFWC- Bangladesh Provides point based forecast upto 5-days lead time during May to October 7-days a week
Flood Forecasting and Warning in Bangladesh
Brahmaputra Basin 5
-Bahadurabad - Sariakandi - Serajgonj - Aricha - Elasin Ghat
Ganges Basin 4
- Hardinge Bridge - Gorai Railway Bridge - Goalondo -Bhagyakul
Satellite Data based Flood Forecast in 2014 using JASON-2 with-8 day lead time
Forecast Stations : 9 Bahadurabad
Serajganj
Elashinghat
Aricha
Sariakandi
Hardinge Bridge
Gorai Rly BR
Bhagyakul Goalondo
