Category Archives: Mapping

Map of Mekong Reservoirs and Dams


This story was originally published on the CPWF-Mekong website.

CPWF launches the most accurate map to date of dams and reservoirs in the Mekong.

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The CPWF-Mekong dams database provides the locations of every known commissioned, under construction and planned dam in the Mekong River Basin.

It should be noted that there is a mismatch between this map as seen in ‘Map’ and as seen in ‘Satellite’. Dam locations have been established in ‘Satellite’, and are correct as far as is known. Under the ‘Map’ view, dams are occasionally located on land, which is, of course, incorrect.

‘Unknown’ dams are mainly dams and reservoirs constructed for use in irrigation and/or water supply. We continue to determine names and technical specifications.

The accuracy of many of these data is often highly uncertain, not least because data for planned dams may change. Neither CPWF-Mekong nor any of its partners are responsible for the accuracy of these data.

If you notice any errors in the data, or have new information to add, please contact us.

Data sources:

  • Chinese dams: International Rivers
  • All dams commissioned or under construction: visual identification using Google Earth.
  • Data on mainstream dams: ICEM, 2010. Strategic Environmental Impact Assessment for Hydropower on the Mekong Mainstream. Final Report, prepared for the Mekong River Commission. Hanoi, International Center for Environmental Management and Mekong River Commission.
  • Planned/under construction dams in the 3S basin (i.e. Sekong, Sesan and Sre Pok): ADB RETA website previously available at Site apparently closed.
  • Mekong Secretariat, 1970. Indicative Basin Plan Report. Mekong Committee, Bangkok.
  • Mekong Secretariat, 1988. Perspectives for Mekong development; revised indicative plan (1987) for the development of land, water and related resources of the lower Mekong basin. Bangkok, Interim Mekong Committee.

For .jpg files of the map, please click on the following links:

MRB — whole Mekong River Basin

MRB 1 — southern portion of the Mekong River Basin

MRB 2 — middle portion of the Mekong River Basin

MRB 3 — upper portion of the Mekong River Basin

MRB 4 — zoomed in picture of northern Thailand, Laos, Vietnam, and southern Yunnan

MRB 5 — zoomed in picture of central to southern Laos and Vietnam, and Cambodia

This initiative has been funded by:

– See more at:

Phnom Penh Special Economic Zone


“A leading SEZ in the Kingdom of Cambodia and major industrial park in the vicinity of the capital: Phnom Penh.

Centrally located at the heart of the region’s east-west corridor, Phnom Penh SEZ offers your business a wide range of financial incentives – and your products easy and highly profitable access to the Japanese, US and European markets.”


Mapping Resources

Land Cover and Surface Climate Group in the Department of Earth and Environment at Boston University

ORNL’s LandScan™ is the community standard for global population distribution


2013 AutoCAD File Phnom Penh

Thank you to Serey Pagna for sharing. Download file here.



Flood Mapping and Flood Dynamics of the Mekong Delta


ISSN 2072-4292

Flood Mapping and Flood Dynamics of the Mekong Delta:

ENVISAT-ASAR-WSM Based Time Series Analyses

Claudia Kuenzer 1,*, Huadong Guo 2, Juliane Huth 1, Patrick Leinenkugel 1, Xinwu Li 2

and Stefan Dech 1

1 German Remote Sensing Data Center, DFD, German Earth Observation Center (EOC), German

Aerospace Center (DLR), Oberpfaffenhofen, D-82234 Wessling, Germany;

E-Mails: (J.H.); (P.L.); (S.D.)

2 Center for Earth Observation & Digital Earth (CEODE), Chinese Academy of Science,

Beijing 100094, China; E-Mails: (H.D.G.); (X.W.L.)

* Author to whom correspondence should be addressed; E-Mail:;

Tel.: +49-8153-28-3280; Fax: +49-8153-28-1458.

Received: 20 November 2012; in revised form: 1 February 2013 / Accepted: 1 February 2013 /

Published: 5 February 2013

Abstract: Satellite remote sensing is a valuable tool for monitoring flooding. Microwave

sensors are especially appropriate instruments, as they allow the differentiation of

inundated from non-inundated areas, regardless of levels of solar illumination or frequency

of cloud cover in regions experiencing substantial rainy seasons. In the current study we

present the longest synthetic aperture radar-based time series of flood and inundation

information derived for the Mekong Delta that has been analyzed for this region so far. We

employed overall 60 Envisat ASAR Wide Swath Mode data sets at a spatial resolution of

150 meters acquired during the years 2007–2011 to facilitate a thorough understanding of

the flood regime in the Mekong Delta. The Mekong Delta in southern Vietnam comprises

13 provinces and is home to 18 million inhabitants. Extreme dry seasons from late

December to May and wet seasons from June to December characterize people’s rural life.

In this study, we show which areas of the delta are frequently affected by floods and which

regions remain dry all year round. Furthermore, we present which areas are flooded at

which frequency and elucidate the patterns of flood progression over the course of the rainy

season. In this context, we also examine the impact of dykes on floodwater emergence and

assess the relationship between retrieved flood occurrence patterns and land use. In addition,

the advantages and shortcomings of ENVISAT ASAR-WSM based flood mapping are

discussed. The results contribute to a comprehensive understanding of Mekong Delta flood

dynamics in an environment where the flow regime is influenced by the Mekong River,

overland water-flow, anthropogenic floodwater control, as well as the tides.

Keywords: flood; flood dynamics; flood progression; water detection; inundation; radar;

Envisat; ASAR; WSM; feature extraction; time series; Mekong Delta; Vietnam

Phnom Penh Treasure Map

Google today (April 1).

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Phnom Penh Water Over Time

Thank you to Pagna Serey for sharing this great map. Pagna is a visiting scholar at Parsons and a Cambodian architect. Here is the PDF.

water changing



International Crisis Mappers Conference

Top five videos from the recent International Conference of Crisis Mappers. First one is of Cambodia. More about Crisis Mappers here.

ICCM 2012: Taylor Owen: Historical Mapping and the US Bombardment of Cambodia

Taylor Owen mapped 200,000 sortie attacks against Cambodian villages during the US campaign in the 1970s, using IBM punchcard data released during the Clinton era. Exploring the evidence, Owen fact checks Nixon’s statements, finding bombardment began 4 years before the attacks, and that Kissinger bombed civilian villages, contrary to his claims. This bombing campaign contributed to radicalizing the population, enhancing support for the genocidal Khmer Rouge that was to come. @taylor_owen

ICCM 2012: Josh Campbell, Imagery to the Crowd

Josh Campbell from the Humanitarian Information Unit at the US Department of State, discusses building a framework to support sharing high-resolution satellite imagery with the volunteer technical community, for improved disaster response and development projects. Crowdsourcing enables the humanitarian response community to have access to road maps being rapidly improved with updated, detailed information, demonstrated initially by the Humanitarian Open Street Map team’s work on the Haiti Crisis Map. Josh examines how sharing high-resolution satellite imagery with the crowd will help improve crisis maps, discussing two prototype projects: 1. live mapping refugee camps in the Horn of Africa and 2. generating fire risk maps of Gulu, Uganda. @disruptivegeo.

ICCM 2012: Clionadh Raleigh: Armed Conflict Location Events Data (ACLED)

Clionadh Raleigh describes what we have learned from the first and most comprehensive micro-level data on conflict events in Africa, the Armed Conflict Location Events Dataset (ACLED). ACLED records all reported politically-motivated violent events in Africa since 1997. We have learned, for example, that the agents of violence have substantially changed over the past 15 years. In addition, while the number of civil wars in Africa has gone down in this period, the number of events has increased. @acledinfo

ICCM 2012: John Crowley, Connecting Grassroots & Government: Building the Interface at Camp Roberts

ohn Crowley organizes quarterly field experiments at Camp Roberts, a safe space for experimentation for development and disaster response. These RELIEF experiments [Research and Experimentation for Local and International First-Responders] help connect and craft coordination between the grassroots (the crowd and the volunteer technical community) and government agencies. The Civil Air Patrol Disaster Imagery project, Imagery to the Crowd, and other projects show that we can make strides toward achieving what was thought to be impossible. A must-see. @jcrowley

ICCM 2012: Brian Root, Human Rights Watch: Mapping Immigration Detention & Transfer

Brian Root & his team with Human Rights Watch mapped 5.4 million events of immigration transfer and detention over 10 years, observing remarkable patterns. Mapping was an important tool for sparking reform and policy change. @brian_root