Technical Assistance Consultant’s Report Project Number: 44167-012 December 2013 Bangladesh: Main River Flood and Bank Erosion Risk Management Program (Financed by the Japan Fund for Poverty Reduction) Prepared by Northwest Hydraulic Consultants, Canada In association with Resource Planning and Management Consultants Ltd., Bangladesh For Bangladesh Water Development Board This consultant’s report does not necessarily reflect the views of ADB or the Government concerned, and ADB and the Government cannot be held liable for its contents. (For project preparatory technical assistance: All the views expressed herein may not be incorporated into the proposed project’s design. Government of the People's Republic of Bangladesh Bangladesh Water Development Board Project Preparatory Technical Assistance No. 8054 BAN Main River Flood and Bank Erosion Risk Management Program Final Report, Annex B Background Data September 2013 In association with Resource Planning & Management Consultants Ltd. Asian Development Bank Funded by the Japan Fund for Poverty Reduction Government of the People’s Republic of Bangladesh Bangladesh Water Development Board Project Preparatory Technical Assistance 8054 BAN Main River Flood and Bank Erosion Risk Management Program Final Report, Annex B Background Data September 2013 PPTA 8054-BAN: Main Rivers Flood and Bank Erosion Risk Management Program Document Background Title: NWRD, Socio-economic data and Surveys & Field Visits, Annex B Annex B1: NWRD Principal Author: Zakia Akter, CEGIS Contributions: Md. Mostafizur Rahman (Shibly), CEGIS Annex B2: Socio-Economic data Principal Author: Tod Ragsdale Contributions: Annex B3: Surveys Principal Author: Tod Ragsdale, Md. Osman Ghani Contributions: Jesper Mathiesen Final version: August 2013, Reprinted 28 February 2014 Document Development R1, 15 July 2013 Formatting, spell check, font change, justification Draft Final R1, 17 July 2013 Formatting, spell check, font change, justification, R2, 29 July 2013 Page setup and print R3 2 Aug 2013 Incorporation of socio-economic data R4 12 Aug 2013 Formatting, page setup R5 21 Aug 2013 Setup cover page and heaer-footer Final R6 30 Sept. 2013 Formatted cover pages & correction R7 28 Feb 2014 Reprinted R6 Review by : Knut Oberhageman, 9 August, 2013 Cover Photo: Culvert in Dhaka Southwest Embankment along Padma River, 2013 (Osman Ghani) Page ii September 2013 B1 NWRD MAIN REPORT ANNEXES Annex A Priority Sub-reach Selection & Sub-reach Descriptions Annex A1 Priority Sub-reach Selection Annex A2 Sub-reach Description Annex B Background Data Annex B1 National Water Resources Database Annex B2 Socio-economic Data Annex B3 Surveys and Field Visits Annex C Institutional and Financial Assessment Annex D Hydrology and Flood Modelling Annex E River and Charland Morphology and River Engineering Annex F Design Issues Annex F1 Geotechnical Investigations Annex F2 Technical Designs Annex G Economic Feasibility Annex G1 Project Cost Annex G2 Economic Assessment Annex H Implementation and Procurement Planning Annex I Social Gender Equity Strategy & Action Plan Annex J Environmental Impact Assessment Annex K Involuntary Resettlement Annex K1 Resettlement Framework Annex K2 Resettlement Plan Page iii PPTA 8054-BAN: Main Rivers Flood and Bank Erosion Risk Management Program Page iv September 2013 Asian Development Bank Funded by the Japan Fund for Poverty Reduction Government of the People’s Republic of Bangladesh Bangladesh Water Development Board Project Preparatory Technical Assistance 8054 BAN Main River Flood and Bank Erosion Risk Management Program Final Report, Annex B1 National Water Resources Database September 2013 PPTA 8054-BAN: Main Rivers Flood and Bank Erosion Risk Management Program Page vi September 2013 B1 NWRD Final Report on Professional Services related to Preparatory Technical Assistance for A large River Flood and Bank Erosion Risk Management March 2013 Page vii PPTA 8054-BAN: Main Rivers Flood and Bank Erosion Risk Management Program Page viii September 2013 B1 NWRD Table of Contents 1. Introduction ..................................................................................................................................... 1 1.1 Background .................................................................................................................................... 1 1.2 Study Area ...................................................................................................................................... 1 2. Description of data layer ................................................................................................................. 3 2.1 Raster data layer ............................................................................................................................ 3 2.1.1 Classified Flood Extent for 1998, 2001, 2004 and 2007....................................................... 3 2.1.2 Digital Elevation Model ....................................................................................................... 3 2.1.3 100, 50, 25, 20, 10, 5, 2 years return period flood data (CEGIS) .......................................... 3 2.1.4 100, 50, 25, 20, 10, 5, 2 years return period flood map (IWM) ........................................... 3 2.1.5 IRS image (Jamuna) ............................................................................................................. 4 2.1.6 IRS image (Padma) .............................................................................................................. 4 2.2 Vector data layer ............................................................................................................................ 4 2.2.1 River Bankline (2012, 2010, 1973) ....................................................................................... 4 2.2.2 BWDB project ...................................................................................................................... 4 2.2.3 Bridge/Culvert ..................................................................................................................... 5 2.2.4 LGED small scale project ..................................................................................................... 5 2.2.5 District Headquarter ............................................................................................................ 5 2.2.6 Upazila Headquarter ........................................................................................................... 5 2.2.7 Union Headquarter ............................................................................................................. 6 2.2.8 District Boundary................................................................................................................. 6 2.2.9 Upazila boundary ................................................................................................................ 6 2.2.10 Union boundary .................................................................................................................. 6 2.2.11 Mouza boundary ................................................................................................................. 7 2.2.12 National road ...................................................................................................................... 7 2.2.13 Regional road ...................................................................................................................... 7 2.2.14 District road......................................................................................................................... 8 2.2.15 Upazila road ........................................................................................................................ 8 2.2.16 Union road .......................................................................................................................... 8 2.2.17 Rural road ............................................................................................................................ 8 2.2.18 Existing Embankment (BWDB) ............................................................................................ 9 2.2.19 Power Transmission Lines ................................................................................................... 9 2.2.20 Substation location ............................................................................................................. 9 2.2.21 Health facilities .................................................................................................................... 9 Page ix PPTA 8054-BAN: Main Rivers Flood and Bank Erosion Risk Management Program 2.2.22 Growth center ................................................................................................................... 10 2.2.23 Hat Bazar ........................................................................................................................... 10 2.2.24 Settlement......................................................................................................................... 10 2.2.25 Major River ........................................................................................................................ 10 2.2.26 Water bodies ..................................................................................................................... 10 2.2.27 Household income ............................................................................................................ 11 2.2.28 Rainfall Station .................................................................................................................