Database - United Nations in Bangladesh
Database - United Nations in Bangladesh
Database - United Nations in Bangladesh
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Water 89<br />
4.1 Surface Water, Flood and Erosion<br />
Table 4.1.1 Statistics on River Bas<strong>in</strong> and Dra<strong>in</strong>age Area<br />
Area of <strong>Bangladesh</strong><br />
Total rivers<br />
Cross boundary rivers<br />
1,47,570 sq. km.<br />
230 nos.<br />
57 nos.<br />
Major river bas<strong>in</strong> area (India, Nepal, Bhutan, Ch<strong>in</strong>a and partly <strong>Bangladesh</strong>)<br />
a. Brahmaputra bas<strong>in</strong> 5,83,000 sq. km.<br />
b. Ganges bas<strong>in</strong> 9,07,000 sq. km.<br />
c. Meghna bas<strong>in</strong> 65,000 sq. km.<br />
d. Southeastern hill bas<strong>in</strong> 45,000 sq. km.<br />
Total<br />
Dra<strong>in</strong>age area<br />
16,00,000 sq. km.<br />
a. Dra<strong>in</strong>age bas<strong>in</strong> <strong>in</strong>side country 7.50%<br />
b. Dra<strong>in</strong>age bas<strong>in</strong> outside country 92.5%<br />
Source : RHD (1998)<br />
Table 4.1.2 Extent of Flood and Correspond<strong>in</strong>g Damage<br />
Year<br />
Inundated Area % of Total Damage<br />
(sq. km) Area (million taka)<br />
1954 36778 25.55 1200<br />
1955 38850 26.98 1240<br />
1956 35883 24.64 2180<br />
1962 37296 25.90 1020<br />
1963 35224 24.46 83<br />
1968 37296 25.90 1645<br />
1970 36260 25.18 330<br />
1971 38332 26.62 380<br />
1974 38850 26.98 10000<br />
1984 25900 17.88 2500<br />
Avg. Depth of<br />
Inundation<br />
(meters)<br />
_<br />
_<br />
_<br />
_<br />
_<br />
_<br />
_<br />
_<br />
_<br />
_<br />
Duration of<br />
Flood (Days)<br />
_<br />
_<br />
_<br />
_<br />
_<br />
_<br />
_<br />
_<br />
_<br />
_<br />
1987 54390 37.77 10000 6.64 17<br />
1988 83994 58.33 50000 7.58 23<br />
1998 100000 65.00 100000 6.58 75<br />
Source : Zohra (1999)<br />
Table 4.1.3 1998 Flood Damage Statistics<br />
Number of affected districts 52<br />
Number of affected thanas 366<br />
Number of affected unions 3323<br />
[contd.]