I am not sure if this is helpful  but it is a fairly current:

Planning atlas of the Lower Mekong River Basin : Cambodia, Lao PDR, Thailand, Vietnam, 2011
Author:                Mekong River Commission. Basin Development Plan,
Publisher:            Phnom Pehn, Cambodia : Mekong River Commission, Basin Development Plan, 2011.
Edition/Format:                 eMap : Atlas : Document : English
Database:            WorldCat
Summary:
The Planning Atlas aims to inform a wide, non-specialist audience about a wide range of land and water related information of the Mekong River Basin. The atlas encourages the reader to explore the different themes and to consider how each might influence the choices that the Mekong River Commission has to make to promote and coordinate sustainable management and development of the Mekong River Basin.

The MeKong River Commission has a website: http://portal.mrcmekong.org/index
As well as map service/interactive maps:  http://portal.mrcmekong.org/map_service

I hope this helps.


Wendy Briley
Government Documents Librarian
Digital Services Division
Arkansas State Library
900 West Capitol Ave.
Little Rock, AR 72201
501-682-2868
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From: Maps-L: Map Librarians, etc. [mailto:[log in to unmask]] On Behalf Of Matthew Parsons
Sent: Thursday, June 23, 2016 2:01 PM
To: [log in to unmask]
Subject: Needed: digital geologic map of Lower Mekong River Basin


Hello all,



I have a researcher looking for a digital geologic map/data of the Lower Mekong River Basin. I've found data for Southeast Asia as a region, but he's hoping for something at a better resolution. Anyone have any suggestions?



Thanks!

Matt Parsons, Geospatial Data and Maps Librarian

University of Washington Libraries