Since 2004, CEGIS
has been predicting riverbank erosion in the major rivers in Bangladesh with adequate accuracy in collaboration with the BWDB.
According to Malik Khan, the CEGIS
deputy executive director, if sediment can be directed into low-lying areas of the coastal Noakhali district through a system of cross dams - walls constructed between islands - and polders - land surrounded by embankments - new land will emerge from the sea.
Louis, MO: Center of Excellence for Geospatial Information Science (CEGIS), United State Geological Survey (USGS).
Vancouver, WA: Center of Excellence for Geospatial Information Science (CEGIS), United State Geological Survey (USGS).
River water Salinity (a) (ppt) Salt intake(g/day) Measure Dry Monsoon Dry Monsoon Minimum 1.35 0.19 2.7 0.38 Maximun 12.9 3.90 25.8 7.8 Average 8.21[b] 0.64 16.4 1.28 Shallow groundwater Salinity (a) (ppt) Salt intake(g/day) Measure Dry Monsoon Dry Monsoon Minimum 0.4 0.4 0.8 0.8 Maximun 11.4 3.8 22.8 7.6 Average 2.60 0.60 5.2 1.2 (a) Salinity levels for 1998-2000, measured at various sites in Khulna and in the Passur River; obtained from CEGIS, Bangladesh.
The average level of river salinity in Dacope was 8.21 ppt (range, 1.35-12.9 ppt) during the dry season and 0.64 ppt (0.19-3.90 ppt) during the monsoon season; shallow groundwater salinity averaged 2.6 ppt during the dry season (0.4-11.4 ppt) and 0.60 ppt (0.4-3.8 ppt) during the monsoon season (1998-2000 data from various sites in the Khulna region, obtained from CEGIS) (Table 1).
Ahmadul Hassan, a senior scientist at Cegis
, told the BBC that the intrusion of salt water would disrupt rice production in one of Bangladesh's poorest regions.
The collaboration of CEGIS
and academic researchers is directed toward development of fully automated solutions in these efforts.
Officials of CEGIS
, a consultative agency with government having a major stake, said the project proposed to protect the 220-kilometre banks at different places of the Padma and Jamuna alongside reclaiming lands, develop flood control mechanisms and protect river routes through capital dredging.
Department of Bangladesh Haor and Wetland Development and Centre for Environmental Geographic Information Services (CEGIS
) organised the workshop on 'Impact of assessment of structural interventions in haor ecosystem and innovation for solution'.