Some Consideration on Water Management in Urban and Peri-Urban Areas of Dhaka City, Bangladesh, and Possibility of Environmental Education on Water Environment

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  • ダッカ市の都市域および周辺域における水マネジメントに関するいくつかの考察および水環境分野の環境教育の可能性

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Abstract

Based on the field survey results in urban and pen-urban water areas of Dhaka City, Bangladesh, conducted in 2006, and the literature review of the existing literatures, desirable direction of water environment management especially on water quality is roughly discussed in this paper. Flood and drought management and arsenic contamination in drinking water are the most common issues among water related problems in Bangladesh. Conservation and improvement of surface water quality is also important in urban and pen-urban area of Dhaka, considering the drinking water sources. Groundwater is currently most important water supply source occupied around 85 % of total water supply in Dhaka City, while surface water consists of around 15 %. Groundwater withdrawal is increasing annually and groundwater level depletion around 1.0-3.0 m per year has been observed in Dhaka City. The Shitalakhya River is one of the surface water sources and the water quality measurement results suggested the water quality is influenced by that of the Balu River. Even in the upper section of the intercourse of the two rivers, water quality can be influenced because of the existing river flow fluctuation derived from tidal level fluctuation. Water resource management is conducted by some specified institutions for the national benefits using mathematical model. However, most information is still not publicly available. Possibility of public participation is discussed in the field of water environment including environment information dissemination.

Journal

  • ENVIRONMENTAL SCIENCE

    ENVIRONMENTAL SCIENCE 22 (2), 91-102, 2009

    SOCIETY OF ENVIRONMENTAL SCIENCE, JAPAN

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