INSTITUTE OF WATER MODELLING Newsletter No. 44 NEWSLETTER October 2013 Contents Projects Page Hydraulic & Morphological Study for Design of Protective Works for Marine-Drive Road Project 02 Data Collection & Bathymetric Survey using ADCP for Regional Cooperation and Integration Project (RCIP) 02 Hydro-geological Investigations & Groundwater Modelling for the Northern Part of the Barapukuria 03 Coal Mine Basin Area Assessment through Mathematical Models of Impact to Surface & Groundwater Resources due to 03 Climate Change for Pilot Areas in the Coastal Region of Bangladesh Monitoring of Hydraulic & Morphological Conditions of the Jamuna River for Safety of River Training 04 Works of Bangabandhu Bridge for the Period 2013 to 2017 Mathematical Modeling Study of Proposed Railway Bridge on the Rupsha River in connection with 05 Khulna-Mongla Port Rail Line Project Climate Change Impact on Urban Drainage System and Adaptation Measures 06 Master Plan for Water Supply & Sewerage System of Dhaka 07 Water Availability, Demand and Adaptation Option Assessment of the Brahmaputra River Basin due 07 to Climate Change News Members of Planning Commission, GOB visit IWM 09 Chairman, BADC and BIWTA visit IWM 09 Executive Director attends eWater's Source 2013 Conference in Australia 10 MOC between IWM and Alterra for joint collaboration in research, education and consultancy signed 10 Signing of contract agreement between IWM and VolumeZero Ltd for design and construction 11 supervision of IWM Headquarters building Experts stress surface water use to save groundwater 11 Hydraulic & Morphological Study for Design of Protective Works for Marine-Drive Road Project The Marine-drive road project connecting Cox's Bazaar with Teknaf began in 1993-94; Phase-I of the road from Kalatoli to Inani (24 km) was completed in 2008. In Phase-II, another 24 km road extending Inani to Shilkhali is under construction from July 2008 and is scheduled to be completed by 2013. The project has been taken to facilitate tourism, regional connectivity and fishing activities. Since commencement of the project, few locations of the Marine-drive road has been damaged from wave action of sea as reported by the Bangladesh Army. The Roads & Highways Department commissioned IWM along with BUET, DHI and EML to carry out the study to find a cost effective sustainable solution to the erosion problem. The main objective of the study is to investigate coastal erosion processes along the Marine-drive road, review existing protective measures and devise immediate & long-term mitigation measures. Installation of Workhorse Sentinel ADCP IWM carried out comprehensive survey viz. topography, bathymetry, suspended sediment, bed sample, velocity profiling & level measurements. IWM also deployed Workhorse Sentinel ADCP in the sea, use of first ever such equipment in Bangladesh to collect wave height measurements. IWM also carried out analysis on historical bank line changes using satellite images of 1974, 1980, 1989, 2000 and 2012 to indentify vulnerable locations and shifting characteristics of shoreline in Phase-I & Phase-II of the project area. Monitoring surveys at vulnerable locations were carried out 4 times in 2012 and 2 times in 2013 to analyze & assess changes in near bank slope in vulnerable areas and erosion- deposition pattern. Based on these monitoring data IWM Temporary Protective Works Along The Marine Drive Road provided an immediate temporary protection design in Situation in specific locations are extremely severe and subjected to consultation with BUET for the vulnerable locations. severe shoreline erosion. Considering existing situation it is urgent The modelling work is continuing in consultation with DHI to devise immediate protective measures against shoreline erosion. experts and selection of proper protective works and design The Bangladesh Army successfully used geo-bags as immediate is being carried out by IWM and BUET in consultation with measure to protect the marine drive road from erosion however, an experts from DHI and EML. All modelling work and design is authentic design is needed to overcome the present situation. expected to be completed by December 2013. Data Collection & Bathymetric Survey using ADCP for Regional Cooperation and Integration Project (RCIP) A Joint Communiqué was signed in 2010 between the Government of Bangladesh and India in connection with sub- regional and Trans-Asian Railway (TAR) connectivity with assistance from ADB. Under the project, the RCIP, Rail Component, involves design of new or upgraded railway crossings over number of major rivers. In this regards, hydro- technical investigations are being undertaken to derive hydraulic design parameters for rail bridge crossings of major waterways, establishing river training works and bank protection requirements. To support the design works through field investigations, CANARAIL Consultants Inc. of Canada requested Institute of Water Modeling (IWM) to undertake and document river bathymetry, bank line location & topography and flow characteristics using RTK GPS. The survey was done in the Modhumati, Arial Khan, Dhaleswari, Buriganga and Gumti River. Under the program, IWM successfully completed field data ADCP observation using RTK-GPS in the Dhaleswari River collection activities in August and September, 2013. 02 Hydro-geological Investigations & Groundwater Modelling for the Northern Part of the Barapukuria Coal Mine Basin Area The Barapukuria Coal Mine in Dinajpur district in North-West Bangladesh is the only underground coal mine in Bangladesh. The coal deposits is underlain by a thick water bearing strata (Aquifer; Avg 107 m) . The coal reserve was discovered by Geological Survey of Bangladesh (GSB) in 1985. The U.K. based firm "MIS Wardell Armstrong" and China based organization "China National Machinery Import and Export Corporation (CMC) carried out some feasibility study in Barapukuria area and confirmed about 390 MMT reserve of coal in an area of 6.68 sq kms. The quality of Barapukuria coal is also better compared to imported coals. Barapukuria Thermal Power Plant This gives Barapukuria coal competitive advantage over imported coals. Barapukuria coal is also low in ash and Barapukuria Coal Mine Area extremely low in Sulphur content which meets international Phulbari Coal Mine Area environmental standards. On completion of supplementary INDIA geological survey and basic design of the mine by CMC and approval by Petrobangla, physical works of the project commenced on 1st June 1996. The present underground mining area covers the central 3 sq Dighipara Coal Mine Area km out of 6.68 sq km reserve area. No coal extraction is carried out from Northern 2.81 sq km (Reserve 135 MMT Approx.) area where coal exists in relatively shallow depth. Presently it was decided to conduct study for selecting suitable methodology for extraction of coal in the Northern Legend District HQ Base Map Map Area Railway Thana HQ Hydrogeological Study and Groundwater Modelling National Road Teesta Canal for Northern Part of Barapukuria Coal Basin Area part of existing mining area. To select suitable methodology Regional Road Proposed Teesta Canal River/Khal Figure : 1.1 Administrative Boundary Barapukuria Coal Mine Area for mining in the said area, a detailed hydro-geological and International Boundary Coal Reconized (Others) N District Boundary Homestead Thana Boundary Bay of Bengal groundwater modelling study is being carried out by IWM Union Boundary Model Area under an agreement with Barapukuria Coal Mining Company Limited (BCMCL) since October 2012. Base Map of the Study Area The main objective of the proposed study is to develop sustainability of the area through different option studies. preliminary mine water management plan to control " To understand and assess rain water drainage and flooding movement of surface as well as the groundwater on and off situation in and around the proposed coal mine area under site, over the production period of the mine life, if "open pit different scenarios. mining" method is selected. The study also addresses suitable strategy for mining in fulfilling following specific objectives: " Analyze quality of coal seam water and mine drainage water. " Surface and groundwater resources assessment in and The study will help in better understanding of the surface and around the northern part of coal basin area. ground water resources in the project area and their interaction, dewatering requirements, probable impacts of " Assess dewatering requirements & regional impacts to dewatering, identification of remedial measures and finally groundwater level due to dewatering. assist BCMCL authority in deciding the method of coal mining " Define problems of irrigation, drinking and industrial water to be adopted in the area. supply due to mining & suggest remedial measures. Find out possible remedial measures for groundwater Assessment through Mathematical Models of Impact to Surface & Groundwater Resources due to Climate Change for Pilot Areas in the Coastal Region of Bangladesh The study is one of the 3 packages of the BWDB project titled Pilot area-1 (PA-1) is about 4867 sq km lying in 15 upazilas of "Establishment of Monitoring Network and Mathematical Model Southwest Region & Pilot area-2 (PA-2) is about 946 sq km Study to Assess Salinity Intrusion in Groundwater in the Coastal spreading over 8 upazilas of Eastern Hilly Region. Area of Bangladesh due to Climate Change" funded by the In order to achieve the study objectives, a modelling study Climate Change Trust Fund under