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Lower Season II Dam will displace ethnic minorities in Stung Treng, Cambodia

Ethnic minorities in Stung Treng Province, Cambodia call on the spirits to stop the construction of the Lower Season II Dam.


While described by proponents as a merely “tributary” dam, the construction of the Lower Sesan 2 (LS2) dam in Stung Treng province is causing immense fears of livelihood and ecosystem destruction [1]. Located at the Sesan and Srepok River, just 25km before they join the Mekong River, the L2S, with a planned capacity of 400MW and a reservoir size of around 34,000ha, is in fact among the largest dam projects in Cambodia [1].

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Basic Data
Name of conflict:Lower Season II Dam will displace ethnic minorities in Stung Treng, Cambodia
State or province:Stung Treng Province
Location of conflict:Sesan district
Accuracy of locationHIGH (Local level)
Source of Conflict
Type of conflict. 1st level:Water Management
Type of conflict. 2nd level:Land acquisition conflicts
Dams and water distribution conflicts
Specific commodities:Electricity
Project Details and Actors
Project details

The dam will have a reservoir size of 33,560ha, a length of 6km, and a height of 75m [3]

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Project area:33,560
Level of Investment:977,000,000
Type of populationRural
Affected Population:5000 people evicted; 78,000 (upstream) and 22,000 (downstream) affected by changing hydrology and declining fish stock
Start of the conflict:15/06/2007
Company names or state enterprises:Hydropower Lower Sesan 2 Co. Ltd from Cambodia - hyrdoelectric dams
Royal Group Cambodia (RGC) from Cambodia - telecommunication, media, banking, insurance, resorts, education, property, trading, agriculture, dams
China Hydrolancang International Energy Co from China - hydroelectric dams
China Huaneng Group (CHNG) from China - electricity
EVN International Joint Stock Company (EVN) from Vietnam - construction, hydropower, project management
Electricity of Vietnam from Vietnam
Electricite du Cambodge (EdC) from Cambodia - electricity
Key Consultants Cambodia (KCC) (KCC) from Cambodia - consultancy
Power Engineering Consulting Joint-Stock Company (PECC) from Vietnam - consultancy
Ang & Associates Lawyer Ltd. from Cambodia - hydroelectric dams
Relevant government actors:Tung Ciny, deputy director general of the Ministry of Industry, Mining and Energy
Environmental justice organizations (and other supporters) and their websites, if available:Sesan, Srepok, Sekong Protection Network (3SPN), Cambodia; Mekong Watch; NGO Forum on Cambodia; International rivers; Rivers Coalition Cambodia
NGOs that demanded a new EIA: 3S Rivers Protection Network (3SPN)(Cambodia); Center for Social Research and Development (CSRD)(Vietnam); Community Economic Development (CED) (Cambodia); Community Resources Centre(Thailand); EarthRights International (United States and Thailand); Finnish Asiatic Society; Fisheries Action Coalition Team(FACT)(Cambodia); International Rivers(United States and Thailand); Law and Policy of Sustainable Development Research Center (LPSD) (Vietnam); Mekong Monitor Tasmania (Australia); Mekong Watch; (Japan and Thailand)
NGOs that submitted a a formal concern regarding human rights abuses: EarthRights International; International Rivers; Samreth Law Group, Cambodia; Sesan, Srepok, Sekong Protection Network (3SPN), Cambodia
Conflict & Mobilization
IntensityMEDIUM (street protests, visible mobilization)
Reaction stagePREVENTIVE resistance (precautionary phase)
Groups mobilizing:Farmers
Indigenous groups or traditional communities
International ejos
Local ejos
Ethnically/racially discriminated groups
Fisher people
Forms of mobilization:Development of a network/collective action
Involvement of national and international NGOs
Objections to the EIA
Official complaint letters and petitions
Public campaigns
Street protest/marches
Refusal of compensation
Environmental ImpactsVisible: Deforestation and loss of vegetation cover
Potential: Biodiversity loss (wildlife, agro-diversity), Food insecurity (crop damage), Loss of landscape/aesthetic degradation, Surface water pollution / Decreasing water (physico-chemical, biological) quality, Large-scale disturbance of hydro and geological systems, Reduced ecological / hydrological connectivity
Health ImpactsVisible: Mental problems including stress, depression and suicide
Potential: Malnutrition, Infectious diseases
Socio-economical ImpactsVisible: Violations of human rights
Potential: Displacement, Loss of livelihood, Loss of traditional knowledge/practices/cultures, Land dispossession, Loss of landscape/sense of place
Project StatusUnder construction
Conflict outcome / response:Strengthening of participation
Development of alternatives:According to International Rivers, one of the campaigning NGOs, the recommendations are as follows [3]: "1) The developers and RGC should recognize LS2’s severe impacts on the Mekong River’s natural resources, in particular fish, and livelihoods and food security of local communities not only inside Cambodia, but also over the entire Mekong River Basin, and reconsider the project. 2) The MRC and RGC should recognize LS2’s adverse impacts on the entire Mekong River Basin and consider the project not as a tributary dam but as equivalent to a mainstream dam, and submit it to MRC’s prior consultation process. 3) LS2’s negative impacts on the Mekong River’s ecology as well as life, livelihoods, and culture of local communities, indigenous/minority groups in particular, who rely on the river’s natural resources, should be more thoroughly assessed and weighed against the project’s economic returns. These assessments should cover not only Cambodia but the entire Mekong River Basin. 4) Sufficient information on LS2 and its resettlement and compensation plans should be disclosed to local communities who will be directly and indirectly affected by the project. They should be fully consulted and their views should be incorporated into final decisions."
(note: RGC = Royal Government of Cambodia; MRC = Mekong River Commission)
Do you consider this an environmental justice success? Was environmental justice served?:No
Briefly explain:The project goes on and it does not look like that it is going to be stopped.
Sources & Materials
References to published books, academic articles, movies or published documentaries

[5] Ziv G., Baran B., Nam S., Rodrigues-Ltrube I., Levin S., 2012. Trading-off fish biodiversity, food security and hydropower in the Mekong River Basin. Proceedings of the National Academy of Sciences of the United States of America, 109 (15)
[click to view]

[3] Mekong Watch & 3S River Protection Network Factsheet "Lower Sesan 2 Hydropower Project" (accessed 05/03/2015)
[click to view]

[1] International Rivers 2014. Starving the Mekong: Expected social and environmental impacts from construction and operation of the Lower Sesan II Dam
[click to view]

Middleton, C. (2012). Transborder Environmental Justice in Regional Energy Trade in Mainland South-East

Asia. ASEAS - Austrian Journal of South-East Asian Studies, 5(2), 292-315.
[click to view]

Links to general newspaper articles, blogs or other websites

[2] International Rivers on the Lower Sesan 2 Dam (accessed 05/03/2015)
[click to view]

[4] Phnom Penh Post article (02/07/2014): "Delay Sesan dam: villagers" (accessed 05/03/2015)
[click to view]

[6] Phnom Penh Post article (02/03/2015): "Community prays to river to halt dam work" (accessed 05/03/0215)
[click to view]

[7] Phnom Penh Post article (29/09/2014): "Villagers refuse relocation" (accessed 05/03/2015)
[click to view]

[8] NGO Statement regarding human rights concerns (accessed 05/03/2015)
[click to view]

[9] NGO statement calling for a new Environmental Impact Assessment (EIA) (accessed 03/05/2014)
[click to view]

Related media links to videos, campaigns, social network

Downstream villagers comment on the dam project
[click to view]

Upstream villagers comment on the dam project
[click to view]

Meta information
Contributor:A. Scheidel (ICTA-UAB) / arnim.scheidel "at"
Last update06/03/2015
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