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Transboundary Water Quality Issues in the Lower Mekong Basin.  

Transboundary Water Quality Issues in the Lower Mekong Basin.

Deteriorating water quality in the lower Mekong River basin has been identified as a priority transboundary issue by each of the four member countries. Three particular transboundary water quality issues are considered in this report: [ the potential effects of municipal and industrial wastewater from Phnom Penh on both downstream Vietnam and fish migration in Tonle Sap River; the potential effects of municipal and industrial wastewater from Vientiane on both neighbouring Thailand and fish migration in the Mekong River; the influence of upstream water on the degraded water quality in the Mekong Delta. ] A risk assessment framework has been used to assess these issues. In particular, the risk of adverse effects on three key values of the Mekong River ? ecosystem health (characterised by eutrophication, toxicity due to dissolved oxygen and toxicants, and ecosystem processes), fish migration and human health (drinking, recreation) - have been assessed. The risk to irrigation water quality was also assessed for the third transboundary issue above.

Published by: Mekong River Commission (MRC) -
Uploaded on: May 2006
File size: 6.2 MB - Language: English
Keyword(s): Environment
Category: Environment

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