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Revival of Water Bodies and River Systems for a Smart Dhaka City

The demand for water in Dhaka surpasses available resources, leading to groundwater depletion. Proposed flood protection solutions, pump stations, drainage systems, and pollution control measures are crucial. Existing pump capacities are insufficient for combating climate change, necessitating permanent and semi-permanent pumping stations. Strategies to address blockages, encroachments, and pollution are essential. Improving urban-rural linkage, preserving water bodies, and enhancing flood flow zones are vital for sustainable water management. Hatirjheel exemplifies integrated water management, with potential to expand water bodies for flood mitigation and urban development.

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Revival of Water Bodies and River Systems for a Smart Dhaka City

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  1. Revival of Water Bodies and River System for Smart Dhaka City Saiful Alam Institute of Water Modeling

  2. Major River spill/ Flood way around Dhaka Extended Dhaka Dhaka City Source: IWM

  3. Regional Surface Water Balances in low Flow months Demand of water for various usages in Dhaka far exceeds the water resources availability

  4. Groundwater level trends in Dhaka In NC region steep lowering due to upper thick clay layer. Recharge constrained due to upper thick clay layer and urbanization (Dhaka, Gazipur)

  5. Turag-Buriganga-Dhaleswari Tongi Khal-Balu River-Lakhya 6 River Surrounds Dhaka Dhaka city Dhaka city

  6. Eastern Dhaka, Without Flood protection Proposed Pump stations Western Dhaka Flood Protected Existing Pump stations Existing Pump Capacities is inadequate to combat Climate Change Permanent Pumping Station: Kallyanpur: 20 m3/s Dholaikhal: 22 m3/s Goranchatbari: 22 m3/s Semi-permanent Pumping Station: Kamalapur Rampura • Eastern Part: 124 km2 • Western Part: 136 km2

  7. Drainage System Storm Sewer Line: 280 km Open Channel: 145 km Box Culvert : 10.5 km DCC tertiary Drains: anticipated about 1,200 km Lakes: Gulshan, Banani, Dhanmondi, Uttara, Hatiljil, Cresent Lake, Permanent Pumping Station: Kallyanpur: 20 m3/s Dholaikhal: 22 m3/s Goranchatbari: 22 m3/s Semi-permanent Pumping Station: Kamalapur Rampura

  8. Blockage of Drainage System Blockage at outlet near Diabari Illegal encroachment at Mohammadpur Obstruction of drainage outlet Storm water outlet at Dholaikhal

  9. Pollution Of River Waste from poultry and dairy farms Industrial Waste Water Solid Waste Dumping Oil Spill & Bilge Water

  10. Present Land Use of Western and Eastern Dhaka

  11. Encroachment of Wetlands and Water Bodies 2008 2017

  12. Water Bodies/Flood flow zone/ retention pond Future Scenario (Planned Improvements?) According to DMDP, there are two categories of Flood Flow Zones: (i) Main Flood Flow and (ii) Sub-flood Flow Zone.

  13. Urban and Rural Linkage: Proposed land use in Badda Thana 2004 Land filling of DAP water bodies in Eastern Dhaka ( Badda Thana) Proposed Agriculture land reduced from 50.7% to 1,7 % in Badda Thana

  14. Hatirjheel: An example of an Integrated Development and Water management In Dhaka Scenic and Attractive Hatirjheel is an unique example for the restoration of Water bodies reviving the multi functional aspect of water bodies. Navigation and Water Sports Hatirjeel can be integrated with other water bodies in western Dhaka to restore historical water transport and many others. Strom water retentions Pond Rajuk should look appropriately demarcate flood flow zoning. Present provision in DAP contradicts the provisions in Environmental Conservation Act and BWA2013

  15. One study shows area of Water bodies in Dhaka nee to be expanded in order to protect Dhaka from frequent internal flooding under climate change Water body restoration is needed to reduce flood damage • There is still potential for integrated development of water bodies in eastern Dhaka. A number of larger water bodies demarcated by DAP should be urgently be acquired and developed for multipurpose usages.

  16. Thank you

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