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Environmental flow requirements assessment in the Halda River, Bangladesh

Akter, Aysha and Ali, Md. Hazrat (2012) Environmental flow requirements assessment in the Halda River, Bangladesh. Hydrological Sciences Journal, 57 (2). pp. 326-343. ISSN 0262-6667

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Official URL: http://dx.doi.org/10.1080/02626667.2011.644242

Abstract

Environmental flows have scarcely been considered in river water management in Bangladesh. This study attempts to assess the environmental flow requirements in the Halda River, Bangladesh. Thus, the objectives are to estimate the Halda River flow with different return periods/probabilities, which was done using the log-Pearson Type III distribution (LPIII), and to mitigate the environmental problems in the Halda River using the building block method. The LPIII distribution was used to estimate the expected extreme and satisfactory flows for fish habitat at Panchpukuria station and the expected extreme water levels at Panchpukuria, Narayanhat, Telpari and Enayethat stations. It was found that floods are likely to occur at least once in 2.1, 1.02, 1.75 and 1.25 years at Panchpukuria, Narayanhat, Telpari and Enayethat stations, respectively. The results of flow and water quality analyses suggest that environmental flow requirements cannot be achieved in this river throughout the year. The environmental flow requirements and conservation of fish resources can be achieved by implementing the suggestions provided in conjunction with a comprehensive awareness programme, investigations and trade-off analyses being among the suggestions.

Item Type:Article
Uncontrolled Keywords:Hydrological sciences
Subjects:G Geography. Anthropology. Recreation > GB Physical geography
Divisions:Civil Engineering
ID Code:46928
Deposited By: Haliza Zainal
Deposited On:22 Jun 2015 13:56
Last Modified:27 Sep 2017 09:39

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