Introduction and Overview:Regional Workshop & Study Tour onGroundwater Information in the LMB

Hydrology TeamInformation and Knowledge Management Programme

Mekong River Commission Secretariat

Regional Workshop and Study Tour onGroundwater Information in the Lower Mekong Basin

17 February 2014Bangkok, Thailand

Scope and Objectives of the Workshop and Field Visit General Objectives

• Current situation on groundwater monitoring systems in the LMB; • Learn from experiences in Thailand with respect to groundwater resources

management• Development of a Groundwater Database for the Lower Mekong Basin • Continuation of the cooperation with USGS• Preliminary action plan and strategy for future MRC groundwater

monitoring activities in cooperation with Line Agencies of the Member Countries.

Groundwater Resources in a Global perspective• Freshwater Resources globally• and regionally

Example of Groundwater Resources in a Region• Detailed investigation on 2 Cambodian Provinces• On site investigation exchange between Groundwater and Surface water

Agenda Time Topic Speaker/Lead 08.30 – 09.00 Registration and refreshment All participants

09.00 – 09.30 Welcome and opening Representative from TNMC Representative from Department of Groundwater Resources Mr. Sourasay Phoumavong, TSD Director Mr. Suthy Heng, IKMP Coordinator

09.30 – 10.00 - Introduction to Regional Technical Workshop and Study Tour on Groundwater Information in the Lower Mekong Basin

- Collaborations of MRCS Programmes on groundwater information

Dr. FelixSepp Seebacher, International Technical Advisor, IKMP

10.00 – 10.30 Review of Groundwater Information in the Lower Mekong River Basin

Dr. Sothea KHEM, Operational Hydrologist, IKMP

10.30 – 11.00 Refreshment All participants

11.00 – 11.30 Groundwater Database Development for the Lower Mekong River Basin, Cambodia, Lao PDR, Thailand, and Viet Nam

Mr. Andrew Teeple, U.S. Geological Survey

11.30 – 12.00 Best Practice of Groundwater Monitoring in Thailand

Dr.Tussanee Nettassana, Thai Department of Groundwater Resources

12.00 – 13.30 Lunch break All participants

13.30 – 14.00 Status of groundwater information in Cambodia

Representative from CNMC

14.00 – 14.30 Status of groundwater information in Lao PDR

Representative from LNMC

14.30 – 15.00 Status of groundwater information in Viet Nam

Representative from VNMC

15.00 – 15.30 Status of groundwater information in Thailand

Representative from TNMC

15.00 – 15.30 Refreshment All participants

15.30 – 16.30 Discussion

Dr. FelixSepp Seebacher Mr. Andrew Teeple Representative from Department of Groundwater Resources

16:30 – 16.45 Wrap-up of Workshop Dr. FelixSepp Seebacher, International Technical Advisor, IKMP

16:45 – 17.00 Final remarks and closing Mr. Sourasay Phoumavong, TSD Director

Agenda (cont.) 18-01-2014: Leave Bangkok for Khon Kean

Most participants will travel on TG 44, leaving Suvanabhumi at 10:50 arriving in Khon Kaen at 11:45

19-01-2014: Field visits in and around Khon Kaen

08:30 Leaving from Charoenchit House (Hotel in Khon Kaen)

09:30 – 12:00 Visit DGR Groundwater development of an artificial flowing well at Ban Non Somboon , Banhad district,Khon Kaen Province

Visit agriculture purpose in rainfed area project's siteat Ban Tangpadpordang, Banhad district, Khon Kaen Provinve

12:00 – 13:30 Lunch

13:30 – 16:00 Visit Khonkean Brewery at Thaphra, Muang District, Khonkaen(Groundwater for industrial purpose)

The site visit will be hosted by Department of Groundwater, Regional Office 4

20-01-2014: from Khon Kaen return trips to home countries

Groundwater in a Global Perspective Global Water Balance

• World Water Resources total is 1,388 million km3

• Only 2.5 % are fresh water with a total of 35 million km3

Freshwater Resources (70% frozen, 30 % liquid)

• Ice in form of Glaciers and Arctics about: 24 million km3

• Fresh groundwater and soil moisture: 10.5 million km3

• Lakes and Reservoirs: 0.1 million km3

• Wetlands and Rivers: 0.012 million km3

• Atmospheric water vapor: 0.010 million km3

The Mekong River Basin

• Mekong River: 450 km3 in 1 year

• Groundwater reserves in the Lower Mekong Basin 70 to 350 km3

Global Transboundary AquifersMap by International Groundwater Resources Assessment Centre (IGRAC)

Asian Transboundary Aquifers88 TB aquifers identified; # 84: Mekong River plain, Cambodia, Lao PDR,

Thailand, Viet Nam

Hydrogeological Map Southeast AsianChina Geological Survey, Groundwater Serial Maps of Asia (1: 8,000,000)

Source: http://unesdoc.unesco.org/images/0022/002207/220768eo.pdf

Study Site in Cambodia (IDE, M. Roberts)

2 provinces on the left banks of the Mekong, multi year study incl. GW model

Data from 1998 to 2008

Study Site in Cambodia - Hydrogeology

Study Site in Cambodia - Hydrogeology

Study Site in Cambodia – Groundwater Level

Study Site in Cambodia – Groundwater Level

Study Site in Cambodia – Groundwater Decline

Study Site in Cambodia – Groundwater Decline

Study Site in Cambodia – Groundwater Level and dependence of Surface water (Mekong)

Groundwater and Surface Water 2 Groundwater wells, 1 surface water logger

Groundwater and Surface Water 2 Groundwater wells, 1 surface water logger

• Shallow well (20m, strongly influenced by surface water / rainfall)

• Deep Well (39 m, assumed to be in connection with surface water)

• Surface water logger (HYCOS station at Chaktomuk)

Cross Section towards the river (survey)

2nd August and 3rd October 2013

9.407

8.153

9.572

High well: 9.407

Deep well: 8.153

Bassac River: 9.572

Thank you very much!

Hydrology TeamInformation and Knowledge Management Programme

Mekong River Commission Secretariat