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Urban Development Directorate (UDD) Ministry of Housing and Public Works The People’s Republic of Bangladesh 82, Segunbagicha, Dhaka-1000 FINAL REPORT For Providing Individual Consulting (National) Services as Water Resources Management Expert For “Preparation of Development Plan for Benapole-Jessore Highway Corridor Project” May 2017 Dr. Sujit Kumar Bala Water Resource Management Expert Institute of Water and Flood Management (IWFM) Bureau of Research, Testing and Consultation (BRTC) Bangladesh University of Engineering and Technology (BUET) Urban Development Directorate (UDD) Ministry of Housing and Public Works The People’s Republic of Bangladesh 82, Segunbagicha, Dhaka-1000 FINAL REPORT For Providing Individual Consulting (National) Services as “Water Resources Management Expert” For “Preparation of Development Plan for Benapole-Jessore Highway Corridor Project” May 2017 Dr. Sujit Kumar Bala Water Resource Management Expert Institute of Water and Flood Management (IWFM) Bureau of Research, Testing and Consultation (BRTC) Bangladesh University of Engineering and Technology (BUET) ii TABLE OF CONTENTS List of Figures v List of Tables vii List of Photographs viii Executive summary ix REFERENCES 66 APPENDIX - A 67 APPENDIX - B 69 APPENDIX - C 83 CHAPTER ONE: INTRODUCTION 1 1.1 Background 1 1.2 Objectives 1 1.3 Scope of Work 2 1.4 Expected Outputs 2 CHAPTER TWO: STUDY AREA 4 2.1 Proposed Study Area 4 2.2 General Description 4 2.2.1 Physical Features 4 2.2.2 Hydrological Characteristics 5 2.2.3 Socio-economic Activities 5 CHAPTER THREE: APPROACH AND METHODOLOGY 7 3.1 Introduction 7 3.2 Field Visit 7 3.3 Data Collection 7 3.4 Hydrological Analysis 8 3.5 Hydrological Hazards Assessment 8 3.6 Initial Environmental Examination (IEE) 8 CHAPTER FOUR: FIELD VISIT 10 4.1 Introduction 10 4.2 On the Way Jessore to Benapole 10 4.3 Interactions with Local People 13 CHAPTER FIVE: HYDROLOGICAL ANALYSIS 15 5.1 Geographical Setting 15 5.2 Topographical Setting 15 5.3 Historical Development 15 5.4 Sub regional water resources system and drainage network 15 5.5 Hydrologic Analysis 26 5.6 Estimation of Water Level for Different Return Period 27 5.7 Impact of Climate Change on Water Level 34 CHAPTER SIX: HYDROLOGICAL HAZARDS ASSESSMENT 37 6.1 Introduction 37 iii 6.2 Water Level Gages on the Corridor 37 6.3 Estimation of Flood Inundation Maps 38 CHAPTER SEVEN: POLICY GUIDELINES 45 (Working Paper 3: Policy Guidelines for Land Use Planning and Hazard Mitigation) 7.1 Introduction 45 7.2 Flood and Land Zoning 45 7.3 Multi Purpose Uses of Corridor 47 CHAPTER EIGHT: INITIAL ENVIRONMENTAL EXAMINATION 49 8.1 Introduction 49 8.2 Objective 49 8.3 Scope 49 8.4 Methodology 50 8.5 Policy, Legal and Administrative Framework 50 8.6 Categories of Projects 51 8.7 Description of the Project 51 8.8 Description of the environment(baseline data) 51 8.9 Initial Environmental Examination 51 8.9.1 Initial Environmental Examination of IECs 52 8.10 Identification of Potential Environmental Impacts and Environmental Management 53 Plan (EMP) 8.10.1 During Pre-Construction Stage 53 8.10.2 During Construction Stage 54 8.10.3 During Construction Operation Stage 59 8.11 Monitoring Plan 61 CHAPTER NINE: CONCLUSION AND RECOMMENDATION 65 9.1 Conclusion 65 9.2 Recommendations 65 iv LIST OF FIGURES Figure 2.1: The Map of the proposed Jessore-Benapole Highway Corridor within 4 Khulna Division Figure 3.1: Digital Elevation Model 8 Figure 5.1: Rivers in the South-West and South-Central regions of Bangladesh 16 Figure 5.2: East-west surface profile in South-West and South-Central regions of 17 Bangladesh Figure 5.3: Historical evolution of rivers in South-West and South-Central regions 17 Figure 5.4: The water resources system and drainage network along the Jessore- 18 Benapole Corridor Figure 5.5: The water resources system in the Jessore Sadar upzila along the Corridor 20 Figure 5.6: The water resources system with cross dams in the Jessore Sadar Upzila 21 along the Corridor Figure 5.7: The water resources system in the Jhikargacha Upzila 22 Figure 5.8: The water resources system with cross dams in the Jhiargacha Upzila 23 along the Corridor Figure 5.9: The water resources system in Sharsha Upzila along the Corridor 24 Figure 5.10: The water resources system with cross dams in Sharsha Upzila along the 25 Corridor Figure 5.11: The existing drainage network of Jessore Sadar. 26 Figure 5.12: Upward trend in the annual maximum water level of the Kobadak river 28 at Jhikargacha. Figure 5.13: De-trended annual maximum water level of the Kobadak river at 28 Jhikargacha. Figure 5.14: Probability plot alongwith 90% confidence interval of the fitted LN2 30 distribution to the annual peak water level data of the Kobadak river at Jhikargacha. Figure 5.15: Upward trend in the annual maximum water level of the Betna- 32 Kholpetua river at Kalaroa. Figure 5.16: De-trended annual maximum water level of the Betna-Kholpetua river 32 at Kalaroa. Figure 5.17: Probability plot alongwith 90% confidence interval of the fitted LN3 33 distribution to the annual peak water level data of the Betna- Kholpetua river at Kalaroa. Figure 5.18: Rise of sea level based on 23 tidal gauge records and satellite 34 altimetry. The thick dark line is a three-year moving average of the instrumental records. The recent annually averaged satellite altimetry data are shown in red (Douglas, 1997). Figure 5.19: Predicted Sea Level rise (IPCC, 2001). 35 Figure 6.1: Two gage stations and the Jessore-Benapole corridor 37 v Figure 6.2: High resolution Digital Elevation Model (DEM) of the study area. 38 Figure 6.3: Inundation map of the Jessore-Benapole Highway Corridor considering all return periods up to 100 year 39 Figure 6.4: Inundation map of mean annual flood (2.33 year return period) over 40 the Jessore-Benapole Highway Corridor. Figure 6.5: Figure 6.5: Inundation map mean annual flood (5 year return period) 41 over the Jessore-Benapole Highway Corridor Figure 6.6: Inundation map mean annual flood (20-year return period) over the 42 Jessore-Benapole Highway Corridor. Figure 6.7: Inundation map mean annual flood (50-year return period) over the 43 Jessore-Benapole Highway Corridor. Figure 6.8: Inundation map mean annual flood (100-year return period) over the 44 Jessore-Benapole Highway Corridor. vi LIST TABLES Table 5.1: Statistics of water bodies. 19 Table 52: Statistics of water bodies.in Jessore Sadar Upzila 20 Table 53: Statistics of water bodies with cross dams, bridges, culverts and 21 sluices.in Jessore Sadar Upzila Table 5.4: Statistics of water bodies in Jhikargacha Upzila 22 Table 5.5: Statistics of water bodies with cross dams, bridges, culverts and 23 sluices in Jhikargacha Upzila Table 5.6: Statistics of water bodies in Sharsha Upzila 24 Table 5.7: Statistics of water bodies with cross dams, bridges, culverts and 25 sluices in Sharsha Upzila Table 5.8: Annual maximum water level data of the Kobadak river at 27 Jhikargacha. Table 5.9: Fitted PDFs and the corresponding values of PPCC for annual peak 29 water level data of the Kobadak river at Jhikargacha. Table 5.10: Annual maximum water level data of the Betna-Kholpetua river at 31 Kalaroa. Table 5.11: Fitted PDFs and the corresponding values of PPCC for annual peak 33 water level data of the Betna-Kholpetua river at Kalaroa. Table 5.12: Estimated water level of the Betna-Kholpetua river at Navaron. 33 Table 5.13: Trend of tidal in three coastal stations (MoEF, 2005). 35 Table 6.1: Flood analysis of the Jessore-Benapole Highway Corridor showing 39 return period in yr, water level in m PWD and inundated area in m2 and %. Table 8.1: Checklist for Initial Environmental Examination of the proposed 52 project Table 8.2: Environmental Monitoring Program during Pre-Construction, 62 Construction and Operation stages vii LIST OF PHOTOGRAPHS Photograph 4.1: The Daratana Bridge over the Mukteswari River at Jessore Sadar and 10 encroachments from both ends of the river. Photograph 4.2: The Bridge over the Kobadak at Jhikargacha. 11 Photograph 4.3: The Railway and Road Bridge running parallel over the Kobadak at 11 Jhikargacha. Photograph 4.4: The Kobadak River at Jhikargacha. 11 Photograph 4.5: The Kata Khal, implemented by the British, connects Buk Vara Beel 12 and the Kobadak. Photograph 4.6: The water regulator structure - fish by pass and sediment trap 12 (British design) at the mouth of Kata Khal joining the Kobadak at Jhikargacha. Photograph 4.7: The newly constructed regulator (BWDB design) close to water 12 structure (British design) at the mouth of Kata Khal joining the Kobadak River at Jhikargacha. Photograph 4.8: Ziyar Khal near Benapole to pass flow from the Hakur to various 13 beels and vice versa. Photograph 4.9: Fish catch in the Ziyar Khal on corridor near Benapole. 13 Photograph 4.10: Pachuar Baor on the Hakur River close to Benapole. 13 viii EXECUTIVE SUMMARY The Jessore-Benapole Highway is an essential life line of Bangladesh as well as of the Asian Highway. It is necessary to ensure possible required space for widening the existing highway while preparing the Development Planning of Jessore- Benapole National Highway. The total project area is around 324 sq. km connecting Benapole Land Port to Jessore District Town, where the areas of urban and rural parts are 130 sq. km and 194 sq. km respectively. The overall objectives of project were to prepare a development plan for Jessore-Benapole Corridor with some specific objectives.