1 Introduction......................................................................................................................................... 17
1.1 Background.................................................................................................................................. 17
1.2 Objectives of the CEGIS study.................................................................................................... 18
2 Methodology ........................................................................................................................................ 21
2.1 Sequential devising of the methodological measures .................................................................. 21
2.2 “Nature” and “representativeness” of the study .......................................................................... 21
2.3 Review of secondary information................................................................................................ 23
2.4 Reconnaissance field visit ........................................................................................................... 23
2.5 Development of the detailed workplan ........................................................................................ 24
2.6 Identification of the major vulnerable livelihood groups ............................................................ 24
2.7 Selection of the study villages ..................................................................................................... 24
2.8 Vulnerable group profiling and institutional analysis ................................................................. 25
2.8.1 Community sessions ........................................................................................................ 25
2.8.2 Upazila and district workshops....................................................................................... 26
2.8.3 Key informant interviews ................................................................................................ 26
2.9 Arrangements and implementation of the phases ........................................................................ 26
2.10 Analysisofinformation...............................................................................................................29
3 Physio-geographic environment and framework conditions .......................................................... 31
3.1 Geographical Locations ............................................................................................................... 31
3.2 Data collection and secondary review ......................................................................................... 31
3.3 Topography ................................................................................................................................. 32
3.4 General Physiography ................................................................................................................. 32
3.5 Soils ............................................................................................................................................. 33
3.6 Lithology ..................................................................................................................................... 35
3.7 Climatic Parameters..................................................................................................................... 35
3.8 Rainfall Pattern/Trend ................................................................................................................. 36
3.9 Rainfall Excess-Deficit ................................................................................................................ 38
3.10 FloodingandSurfacewaterflow.................................................................................................40
3.11 Groundwatersituationandresources..........................................................................................41
3.12 GroundwaterDevelopment..........................................................................................................42
3.13 WaterBodies...............................................................................................................................43
3.14 AgricultureLanduse...................................................................................................................44
3.15 Droughtmap................................................................................................................................46
4 Risks and risk perceptions in the study area .................................................................................... 47
4.1 Risk perceptions at community level........................................................................................... 47
4.2 Past risks in the study area........................................................................................................... 49
4.3 Present risks in the non-irrigated areas ........................................................................................ 49
4.4 Present risks in irrigated areas ..................................................................................................... 50