Publications related to Basin Monitoring

2022 Lower Mekong Water Quality Monitoring Report

The 2022 Water Quality Report for the Mekong River and its tributaries shows that water quality for human health protection was rated as “excellent” or “good” at 46 out of 48 stations, with two stations at “moderate” quality. For aquatic life, 26 stations had “high quality,” 19 had “good,” and three had “moderate” quality. Certain parameters, such as electrical conductivity and dissolved oxygen, occasionally exceeded threshold values, although saltwater intrusion in the Vietnam Mekong Delta was less severe than in previous years.

Download | Published on : 14 Nov 2024 | Language : English

2021 Lower Mekong Water Quality Monitoring Report

The 2021 Water Quality Report assesses the status and variations in water quality at 48 monitoring stations along the Mekong River and its tributaries. It found “excellent” or “good” quality for human health protection at 44 stations and “moderate” quality at four. For aquatic life protection, 27 stations had “high quality,” 17 had “good,” and four had “moderate.” Some parameters, such as electrical conductivity and dissolved oxygen, occasionally exceeded guideline thresholds, with saltwater intrusion at My Tho station causing high electrical conductivity during the dry season, though levels were lower than in 2020.

Download | Published on : 14 Nov 2024 | Language : English

2020 Lower Mekong Water Quality Monitoring Report

In 2020, water quality for human health protection was rated as “excellent” at 25 stations, “good” at 22, and “moderate” at one, while aquatic life protection saw “high quality” at 26 stations, “good” at 17, “moderate” at four, and “poor” at one. Parameters like electrical conductivity, dissolved oxygen, and biochemical oxygen demand occasionally surpassed threshold values, with saltwater intrusion at the My Tho station contributing to elevated electrical conductivity during the dry season.

Download | Published on : 14 Nov 2024 | Language : English

Handbook on Mainstreaming Gender into the Mekong River Commission’s Core Functions and Activities: A Guidebook for a Gender-Responsive and Resilient Lower Mekong River Basin

The Handbook for Gender Mainstreaming into the MRC Core Functions and Activities offers a supporting tool – or a guiding note – to assist the MRC to effectively integrate a gender perspective into all aspects of its work, from the development, update and application of strategic tools, procedures, normative guidelines, studies, and organizational strengthening to designing and advocating for joint actions. It also provides a working aid to integrate gender perspectives during the course of the BDS 2021–2030 and SP 2021-2025 implementation, and beyond

Download | DOI: 10.52107/mrc.ajutqn | Published on : 30 Dec 2022 | Language : English

The status and trends of riverine plastic pollution in the Lower Mekong River Basin

This report explains the status and trends of plastic waste pollution in the Lower Mekong River Basin from the perspectives of plastic pollution itself as well as the frameworks and capacity of each Member Country to address the issues of plastic pollution. The report estimates that in 2020, its four countries had produced about 8 million tons of plastic waste – of which, some 70% to 90% were plastic bottles, plastic bags and Styrofoam. Yet this debris does more than adversely affect the Mekong and its tributaries.

Download | DOI: 10.52107/mrc.aqrsb2 | Published on : 19 Dec 2022 | Language : English

Joint Environmental Monitoring Programme at Two Mekong Mainstream Dams: The Don Sahong and Xayaburi Hydropower Projects

The report provides an overview of activities conducted and resulting recommendations from monitoring two mainstream dams: Don Sahong and Xayaburi hydropower projects. It summarizes the pilot monitoring results from the first pilot site report for each hydropower project and the Combined Annual Report in a way that illustrates how findings in hydrology, sediment, water quality, aquatic ecology, and fisheries can be interpreted together. Based on the findings, it provides some initial suggestions for mitigation and adaptive management of construction and operation of hydropower projects. It also concludes with recommendations for revisions to the guidelines and monitoring protocols that can then be incorporated into the JEM Programme document.

Download | DOI: 10.52107/mrc.aqrs7o | Published on : 19 Aug 2022 | Language : English

Mekong Low Flow and Drought Conditions in 2019–2021

This technical report unravels the underlying drivers of the extremely low flows and drought based on an analysis of the available data the MRC has collected. Based on the findings, it suggests potential measures to address and mitigate the impacts of the hydrological droughts and storage on the Basin’s people.

Download | DOI: 10.52107/mrc.qx5yo7 | Published on : 13 Jan 2022 | Language : English

Annual Mekong Hydrology, Flood and Drought Report 2019: Drought in the Lower Mekong Basin

This paper reports on the condition of the Basin in 2019, including its hydrology/water flow, flood and drought. The year saw recorded unprecedented flow conditions in the Mekong mainstream and from tributaries. Erratic climatic fluctuations were also found, ranging from extreme dry to extreme wet within short periods of time. The report ends with key recommendations, looking forward.

Download | DOI: 10.52107/mrc.ajutoy | Published on : 27 Dec 2021 | Language : English

2018 Lower Mekong Water Quality Monitoring Report

This reports on the results of the monitoring of water quality across 48 stations in the LMB. The report shows the water quality in the Mekong and Bassac Rivers was still of good quality with the slight improvement compared with 2016. There was only a small number of measurements of chemical oxygen demand (COD) and dissolved oxygen (DO) that violated the MRC Water Quality Guidelines for the Protection of Human Health (WQGH) and the MRC Water Quality Guidelines for the Protection of Aquatic Life (WQGA). Most exceedances were recorded in the Delta. Of a slight concern was the DO level at Chau Doc, which violated the WQGH for all sampling occasions causing water quality for the protection of human health to be downgraded from ‘good’ in 2017 to ‘moderate’ in 2018.

Download | DOI: 10.52107/mrc.qx5ynz | Published on : 19 Nov 2021 | Language : English

Status and Trends of Fish Abundance and Diversity in the Lower Mekong Basin during 2007–2018

The report is the first ever large-scale study to consider both spatial and temporal variations of fish abundance and diversity in the LMB, using the MRC’s long-term fisheries monitoring data. The monitoring was conducted daily between 2007 and 2018 by professional fishers at 38 stations along the Mekong mainstream and its major tributaries. But only 25 sites were selected for the study due to incomplete data. Eleven of the 25 monitoring stations were in Cambodia, four in Lao PDR, and five each in Thailand and Viet Nam. The study found 617 fish species, belonging to 21 order and 80 families in the LMB from 2007 to 2018. Some 37,530,460 individuals, corresponding to 1,095,848 Kg of fishes were collected. Temporally, both fish diversity and catch have increased during the survey period in the Tonle Sap and the Mekong upstream in southern Laos and Thailand, informing the high diversity of these areas and that sampling effort is still growing.

Download | DOI: 10.52107/mrc.qx5yo0 | Published on : 18 Oct 2021 | Language : English

© 2024 Mekong River Commission

Mr. Yasunobu Matoba

Former Chief Executive Officer (CEO) of the Mekong River Commission (MRC) Secretariat 

Dr. Olivier Cogels

Former Chief Executive Officer (CEO) of the Mekong River Commission (MRC) Secretariat 

Mr. Kristensen Joern

Former Chief Executive Officer (CEO) of the Mekong River Commission (MRC) Secretariat 

Mr. Jeremy Douglas BIRD

Former Chief Executive Officer (CEO) of the Mekong River Commission (MRC) Secretariat 

Mr. Hans Joakim GUTTMAN

Former Chief Executive Officer (CEO) of the Mekong River Commission (MRC) Secretariat 

Mr. Pham Tuan Phan

First Riparian Chief Executive Officer (CEO) of the Mekong River Commission (MRC) Secretariat

Dr. An Pich Hatda

Former Chief Executive Officer (CEO) of the Mekong River Commission (MRC) Secretariat