International Commission on Irrigation & Drainage Commission Interationale des Irrigation et du Drainage


The coastal zone comprises only 3% of the earth’s surface and accommodates about 60% of the world’s population, a figure set to increase to 80% by 2050. As a result, 2/3 of those cities in the world, with a population of more than 7.6 billion people are found in coastal areas. Coastal areas have a great ecological value, for recreation and tourism and provide habitat for many endangered species and also are source of 90% of the world's fish catch.  When thinking of food demands of the future, one cannot ignore the coastal zone that provides both Paddy and fish. ICID took note of this way back in 2001 and established the Working Group on Sustainable Development of Tidal Areas (WG-SDTA).

The tidal areas can be defined as all those coastal areas where the tidal processes are capable of affecting man's activity or of being influenced by human (on the seaward side about 30m water depth and on the landward side up to the limit of the action of sea). The Working Group reviews the progression of natural wet land conservation and constructed wetland development in tidal areas. It attempts to raise awareness of the increasing risk to tidal areas due to global climate change, stimulate discussion on impacts and mitigation measures, and find a balance between the preservation and development of tidal areas. The Group advocates for enhancement of survey, improvement in design techniques, collect information about the tidal area environment around the world; join the international dialogue and organize international conferences. Based on the work undertaken by the WG-SDTA, ICID has brought out publication titled “Towards Sustainable Development of Tidal Areas: Principles and Experiences” to improve the planning, design and management of irrigation and drainage projects in tidal areas.

In addition to the below membership, representatives from Indonesia, South Korea and FAO are Permanent Observers.


Strategy Themes: Basin

(a) To understand the existing and potential challenges and opportunities of tidal areas for now and the future by figuring out underlying issues; (b) To raise awareness of the increasing risk on tidal areas due to global climate change and stimulate interdisciplinary discussions on impacts, mitigation, and adaptation (c) To enhance survey, design techniques, and monitoring and management programs for the irrigation and drainage facilities, and apply to collect information about the tidal area environment around the world; (d) To identify sustainable development and management options in tidal areas, and find a balance between the conservation and development of tidal areas with acknowledgement of ecosystem services; (e) To join the international dialogues and organize international conferences and short courses to promote interdisciplinary and participatory land and water planning and management in tidal areas; and (f) To collaborate with other related working groups actively, and to exchange relevant expe

Established : 2017
Sl. No. Name Email Country Position
1 Dr. Ruey Chy Kao si************* Chinese Taipei Committee Chair
2 Dato’ Ir. Hj. Nor Hisham Bin Mohd Ghazali hi************* Malaysia Vice Chair
3 Mr. Paavan Kumar Reddy Gollapalli pa************* India Secretary
4 Prof. Budi Santoso Wignyosukarto bu************* Indonesia Member
5 Dr. Hiroki Minakawa hi************* Japan Member
6 Dr. (Ms.) Hsiao Weng  Wang - Young Professional wh************* Chinese Taipei Committee Member
7 Dr. JANG Jeong Ryeol wg************* South Korea Member
8 Dr. Mona Liza Delos Reyes mf************* Philippines Member
9 Mr. Surat Thanusin su************* Thailand Member
10 Dr. Vijay Labhsetwar vi************* India Member
11 Prof. Zhang Zhanyu zh************* China Member
12 Dr. Ir. Henk Ritzema he************* Netherlands Observer
13 Mr. Alok Paul Kalsi ws************* India Provisional Member
14 Dr. Dina Salesh di************* Egypt Provisional Member
15 Ir. LIU Zhitong 53************* China Provisional Member
16 Dr. Daeou Eo da************* South Korea Permanent Observer
17 Dr. Harry W. Denecke ha************* Italy Permanent Observer
18 Prof. Ir. Robiyanto Hendro Sustanto ro************* Indonesia Permanent Observer
19 Dr. Jo Jin Hoon jo************* South Korea Permanent Observer


BACKGROUND AND OBJECTIVES: The Working Group on Sustainable Development of Tidal Areas (WG-SDTA) was launched in 2001 during Seoul IEC Meeting based on the activities of the Task Force on “Environmentally Sustainable Options of Tidal Lands and Estuaries" which was constituted by the Asian Regional Working Group (ASRWG) during the pre-Council meetings at 51st IEC Meeting at Cape Town in October 2000.



Established : 2011

Completion of the Mandate : 2016 (The WG-SDTA was first established in 2001 and completed its mandate in 2011 by publising the Hand Book on SDTA. The details of the activities during 2001-2011 can be accessed at



Montpellier, France 2015

  1. The 5th meeting of the Working Group on Sustainable Development of Tidal Areas (WG-SDTA) by Ruey-Chy Kao (Chinese Taipei)
  2. How stakeholder Involvement Guides Integrated Management in Tidal Wetlands in Taiwan by Hsiao-Wen Wang and Pin-Han Kuo (Chinese Taipei
  3. Adapting to Climate Change: Examples from the Netherlands by Henk Ritzema (Netherlands)
  4. Estimation of temporal and spatial distribution of salinity and desalinization time according to internal development scenarios in the Saemangeum Reservoir by Junghoon Choi et al  (Korea)


  1. Global Inventory of Closed-off Tidal Basins and Developments after the Closure, Bart Schultz, Laszlo Hayde, and Park Sang-Hyun
  2. Reliability of Tidal Irrigation System for Leaching and Flushing of Acidity in the Reclamation of Acid Sulphate Soil, Kalimantan Indonesia, Budi Santoso Wignyosukarto
  3. Developing Strategic Operation of Water Management in Tidal Lowland Agriculture Areas of South Sumatera, Indonesia, Dr. Momon Sodik Imanudin
  4. New mandate of WG SDTA, Dr. Ruey-Chy Kao
  5. Investigation and Assessment of Submarine Groundwater Discharge of Ping-Tung Near Shore Area in Southwestern Taiwan, Ruey-Chy Kao, Peter O. Zavialov, and Chung-Feng Ding
  6. Monitoring of Shallow Groundwater Salinity in Livestock Manure Application to Tidal Reclaimed Land, Eun Mi Hong, Jin-Yong Choi, Seung-Hwan Yoo, Won Ho Nam, and Jin Kie Yeo
  7. Application of Decision Support System to Sustainable Lowland Planning and Management in Yunlin Area, Taiwan, Hsiao-Wen Wang, Chun-Yao Yang, and Pin-Han Kuo
  8. Catchment Water Quality Management Planning for Sustainable Development of Tidal Areas, Joong-Dae CHOI, Kyong-Jae Lim, and Cheol-Hee Won
  9. Habitat for Migratory Birds in Tidal Reclaimed Area of Korea, Park Sang Hyun,
  10. Temporal and Spatial Variations of Heavy Metal Concentrations in Sediments of the Tainan Coastal Area, Anping Harbor and Tainan Canal, Southwestern Taiwan, Ping Chen, Cheng-Wei Yu, Ta-Kang Liu, Jin-Li Yu, and Kuo-Tung, Jiann




Won the 3rd Best Performing Workbody Award (BPWA) for its contribution towards the mandate and mission of ICID. The Award was presented to Dr. Park Sang Hyun (Korea), Chairman, WG-SDTA by the President Chandra Madramootoo on the occasion of the 62nd IEC and 21st ICID Congress held at Tehran, Iran, October 2011.


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