River Flood and Bank Erosion Risk Management Program (Financed by the Japan Fund for Poverty Reduction)
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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 8054 BAN Main River Flood and Bank Erosion Risk Management Program Final Report, Annex A Priority Sub-Reach Selection & Sub-reach Descriptions 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 A Priority Sub-reach Selection and Sub-reach Descriptions September 2013 PPTA 8054: BAN- Main River Flood and Bank Erosion Risk Management Program Document Background Title: Priority Site Selection and Sub-reach Descriptions Annex A Principal Author: Knut Oberhagemann, Northwest Hydraulic Consultants Contributions: Team; Background data largely from the National Water Resources Database provided by CEGIS under different subcontracts; Some figures and graphs from CEGIS under different subcontracts; GIS presentations by consulting team, Inundation information from flood modelling, Annex D Early version: Annex A of Interim Report and draft Final Report Final version: September 2013, Re-printed 28 February 2014 Document Development Draft Final 15 June 2013 Revision R1, 17 July 2013 Formatting, spell check, font change, justification R2, 27 July 2013 Formatting, spell check, font change, justification R3, 28 July 2013 Page setup and print R4, 2 Aug 2013 Inclusion of the MCA for priority site selection R5, 21 Aug 2013 Inclusion of parameters for economic feasibility R6, 31 Aug 2013 Formatting and page setup R7 21 Sep 2013 Setup cover page, change month name on header- footer and correction in river areas %. R8, 30 Sep 2013 Final check R9, 30 Sep 2013 Formatting for final print R10, 28 Feb 2014 Reprinted R9 Review Knut Oberhagemann, 1 August, 2013 Knut Oberhagemann, 30 August, 2013 Knut Oberhagemann, 30 September 2013 Cover page: Erosion upstream of Enayetpur Spur, December 2012 (Photo: Knut Oberhagemann) Page ii September 2013 Priority Site Selection and Sub-reach Descriptions 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 River Flood and Bank Erosion Risk Management Program Table of Content ANNEX A1 : PRIORITY SITE SELECTION ....................................................................................................... 1 1 Multi-Criteria Assessment (MCA) of Tranche 1 Interventions .......................................................... 3 1.1 Approach and Key Criteria ............................................................................................................... 3 1.2 Criteria ............................................................................................................................................. 4 1.2.1 River bank erosion .............................................................................................................. 4 1.2.2 Flooding.............................................................................................................................. 4 1.2.3 Social Fabric ....................................................................................................................... 5 1.2.4 Ease of engineering ............................................................................................................ 6 1.2.5 Complements existing work ............................................................................................... 7 1.2.6 “No regret” ......................................................................................................................... 8 1.2.7 Safeguards .......................................................................................................................... 9 1.2.8 Cost .................................................................................................................................. 10 1.2.9 Benefits ............................................................................................................................ 11 1.3 MCA Weighting and Scoreboard .................................................................................................... 12 1.4 Final Selection ................................................................................................................................ 13 ANNEX A2 : SUB-REACH DESCRIPTIONS ................................................................................................... 15 1 Jamuna Right Bank 1 –Jamuna Bridge – Shahjadpur Priority ......................................................... 17 2 Jamuna Right Bank 2 –Pabna ......................................................................................................... 29 3 Jamuna Left Bank 1 – Tangail ......................................................................................................... 33 4 Jamuna Left Bank 2 – Aricha Priority .............................................................................................. 37 5 Padma Left Bank 1 – Paturia – Harirampur Priority........................................................................ 48 6 Padma Left Bank 2 – Harirampur - Mawa ...................................................................................... 58 7 Padma Left Bank 3 – Mawa-Padma Outfall .................................................................................... 62 8 Padma Right Bank 1 – Ganges Barrage-Goalando .......................................................................... 66 9 Padma Right Bank 2 – Faridpur to Arial Khan ................................................................................. 67 10 Padma Right Bank 3 – Arial Khan to Sariatpur ................................................................................ 69 11 Meghna Right Bank 1 – Bhedarganj ............................................................................................... 71 12 Meghna Left Bank 1 – MDIP ........................................................................................................... 73 13 Meghna Left Bank 2 – Matlab to Chandpur ................................................................................... 75 Note: the Tranche-2 and Tranche-3 work is subject to further verification during the preceding tranches. Page iv September 2013 A1 Priority Sub-reach Selection ANNEX A1 : PRIORITY SUB-REACH SELECTION Page 1 PPTA 8054: BAN- Main River Flood and Bank Erosion Risk Management Program Page 2 September 2013 A1 Priority Sub-reach Selection 1 Multi-Criteria Assessment (MCA) of Tranche 1 Interventions 1.1 Approach and Key Criteria MCA is an appropriate approach when comparing quantitative and qualitative data that are otherwise incomparable. This is especially true for prefeasibility level assessment, when not all data are quantified or quantifiable. In this PPTA, an MCA is used to select the sub-reaches to be brought forward for feasibility assessment and potential inclusion in Tranche 1. The MCA is the first step to identify three suitable sub-reaches, to which, in a second step, a simplified economic feasibility analysis will be applied for confirmation of their suitability. The purpose is to arrive at two or three sub-reaches to be covered by Tranche 1 subprojects. We have identified issues and criteria in two categories, means-ends and impacts (Table 1-1). Issues in the means-ends group are vulnerability and planning-engineering aspects, and relate to the identification of priority sites suitable for MRP interventions. Issues in the impact group are safeguards and cost-benefit, and relate to acceptability of the potential impacts of the interventions. Criteria were then identified for each issue, nine criteria in total, each of which can have up to three sub-criteria. In addition, we assess if the identified priority interventions conflict with other planned major interventions. An example would be the Padma Bridge construction, which impacts on two sub-reaches directly