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Socio-Economic Monitoring and Social Impact Assessment
The MRC is committed to being a comprehensive and high-quality source of data and information on the status and trends in water-related conditions, including social and economic situations across the Mekong River Basin. The Basin Development Strategy 2021-2030 particularly prioritizes the modernization of data and information acquisition, processing and sharing, to strengthen the MRC’s role as a knowledge hub for the Mekong River related resources and conditions.
The MRC adopted a comprehensive Mekong River Basin Indicator Framework (MRB-IF) in 2018 comprising five dimensions, including the social and economic dimensions for basin-wide monitoring and impact assessment. The MRC Data Acquisition and Generation Action Plan (DAGAP) to implement the MRB-IF was approved in 2019. Correspondingly, the Socio-Economic Database was developed and finalized in 2023.
The Socio-Economic Database which was launched and publicly available in 2024 integrates the socio-economic indicators under the MRB-IF collected within DAGAP provided by Member Countries from national surveys, administrative reports and concerned national line agencies. This Socio-Economic Data Collection within DAGAP covers a wide-ranging set of 90 socio-economic and gender vulnerability related indicators spanning 40 years from 1981 to 2020, at national and provincial spatial scales (Lower Mekong Basin boundary).
The data include hundreds of underlying data items, and are aggregated by gender (male/female, boys/girls), urban/rural areas, and key water-related sectors (agriculture, fisheries, forestry, hydropower, navigation, sandmining and tourism). The available socio-economic and gender vulnerability data has been applied in the State of Basin Report (SOBR 2023), Mekong Atlas (2023) and other MRC’s assessments and reports at regional and national levels. Therefore, the Socio-Economic Database (2023) will enable users such as the MRCS, Member Countries, and concerned line agencies to access the required data especially, the SE and G&V data items, analyses and maps for use in regional and national planning and decision-making processes in the future.
The countries of the Lower Mekong River Basin (LMB) – Cambodia, Lao PDR, Thailand, and Viet Nam – differ significantly from each other in geographical size, population, economies, standard of living, as well as political and social practices. The current ecological, demographic, and socio-economic conditions in the basin present a complex and evolving landscape.
From an environmental perspective, there have been significant changes in the Mekong River Basin’s flow regime over the past decade. Specifically, dry season flows have increased while flood season flows have decreased compared to historical patterns. While there have been improvements in some social indicators, disparities remain across the basin population. Access to food and basic services varies between the riparian countries and among different population groups within each country.
Economically, although poverty rates have generally declined in the basin countries, a large share of the population remains economically vulnerable. Extreme events, such as floods and droughts, continue to cause substantial economic losses, especially for vulnerable communities that rely heavily on water-related resources.
Based on the analysis of existing data, the LMB countries have made substantial progress over the past decades in terms of social development and gender equality. The MRC recognizes that sustainable development in the basin depends on promoting social equity and enhancing the resilience of its population. Continued economic growth, along with targeted policies and actions, will be needed to tackle persistent inequalities.
In the context of diversity of geography, demographics, and socio-economic conditions across the LMB, it is therefore essential to identify which areas are most vulnerable and the extent to which water resources development projects sustain local livelihoods in the long term. This information is vital for basin planning and to identify the opportunities and risks of different development scenarios.
One of the MRC’s socio-economic assessments featuring a large-scale socio-economic impact assessment is the Council Study on the Sustainable Management and Development of the Mekong River Basin including Impacts of Mainstream Hydropower Projects, published in 2018. The studies foster better understanding of socio-economic changes in the region and how water related developments affect social conditions.
Besides the Council Study (2018) and the Socio-Economic Database (2023), the MRC has been undertaking a programme of recurrent surveys to study the social conditions and vulnerability of households to changes in the environment and in the availability of aquatic resources through the Social Impact Monitoring and Vulnerability Assessment (SIMVA).
SIMVA is an important tool for socio-economic monitoring, generating valuable data for more in-depth studies and basin development planning work. It is part of the MRC’s environment, socio-economic and climate change monitoring system in the LMB. SIMVA supports the goals of the MRC’s Basin Development Strategy, Strategic Plan, and the 1995 Mekong Agreement, which all reaffirm the MRC’s commitment to promote social development.
The first SIMVA survey conducted in 2010 and SIMVA survey conducted in 2011 generated baseline data on socio-economic conditions and the extent of dependence on water resources of people living in the 15 km-wide corridors along each side of the Mekong mainstream and those living on the major floodplains. The 2014 SIMVA survey focused on the impacts of floods and droughts on households in the LMB corridor. The latest SIMVA report 2018 was available in 2021, features gender related information for the first time, in addition to overall livelihood dependency on the water resources. The data is critical for the effective design of prevention and adaptation measures, and for timely water resource interventions.
SIMVA will continue to be a critical part of the MRC’s core river network monitoring under the MRC Strategic Plan 2026-2030. Therefore, the SIMVA Guideline Framework (2025) was developed and published on the MRC website for further reference and implementation of the SIMVA field surveys in 2026. The SIMVA report 2026 will be finalised and published on the MRC website during 2027 as critical data and information for SOBR 2028 and other MRC’s assessments, including the analysis of gender and vulnerability needs, challenges and opportunities throughout the basin.
Both secondary and primary socio-economic data collected and analyzed will serve as a baseline of the current understanding of gender and vulnerability issues in relation to water, food and energy security and to develop recommendations on policy measures for improving equity for vulnerable groups in relation to water, food and energy security in LMB.
- A regional Guideline Framework for SIMVA in LMB 2025
- SIMVA report on a Regional Pilot Study for the Mekong Corridor
- SIMVA 2011 Report on Baseline Survey 2011 of the Lower Mekong Mainstream and Flood Plain Areas
- SIMVA 2014 Report on Baseline Survey 2014 of the Lower Mekong Mainstream and Flood Plain Areas
- SIMVA 2018 Report on 2018 Baseline Survey of the Lower Mekong Mainstream and Floodplain Areas
- Social and Economic Chapters in the SOBR 2023
- Social and Economic Maps and Data in the Mekong Atlas 2023
- A regional report on improving equity for vulnerable groups, including recommended measures for regional and national plans in LMB
- A Gender and Social Vulnerability Assessment Approach