9C9T Atlas

About

Since 2018, Cambodia and Thailand have worked together to achieve joint benefit through transboundary management of flood and drought via the Joint Project on Flood and Drought Management in the 9C-9T Sub-basin. The shared 9C-9T sub-basin area encompasses the Tonle Sap basin upstream in Thailand and the Stung Mongkol Borei basin downstream in Cambodia, eventually carrying water and nutrient to the Tonle Sap Lake. The overarching objective of this regional cooperation project is to increase capacity for transboundary integrated water resources planning and improved water security with consideration to future flood and drought patterns.
This 9C-9T Sub-basin Atlas is a foundational tool that supports these objectives with a shared knowledge and information to inform joint basin planning, management and investment in building resilience to flood and drought. Learn more...

Image credit: Chiang Rai Times

Atlas Map Viewer

Map Viewer is an interactive geospatial mapping tool that allows users to play with spatial layers associated with five key areas of importance to flood and drought management in the context of climate change: Environment, Social, Economics, Climate Change, and Resilience Building.

Map Gallery

The 9C9T map gallery includes an extensive list of beautiful and innovative maps on major topics. Maps are classified by themes (base maps, drought/ flood disasters, natural resources, landuses/ landcovers and climate change). Users can view the maps and be further searched by keyword.

Nature-based Solutions

This catalogue presents a range of nature-based solutions (NbS) with potential to build flood and drought resilience in the 9C-9T sub-basin. The NbS are grouped by different sectors and purposes. Information on each NbS is displayed on a factsheet that can also be downloaded for future reference.

Help

This tab is for the Atlas manual - under development.

Tools

Urban surface runoff model (for training)

This is a practical tool for modelling urban surface runoff developed on MS Excel, making it available for different kinds of users. This version is for training purpose only.

TrainingModule.RainfallRunoff.vs.2.2.Urban.xlsx

Tool for 9C-9T sub-basin drought vulnerability ranking

This is a practical tool for drought vulnerability assessment developed on MS Excel, making it available for different kinds of users. This version is for training purpose only.

9c9t.DroughtVulnerability.xlsm

Base map

Admintrative Map

Sub-basins

River Networks

Elevation Zones

Slope Classes

Natural Resources

Soil Type

Protected Areas

Land Use - Land Cover

LULC maps 1990-2010-2020 (ICEM)

Vegetation Disturbance (1988-2020)

Land Cover 2000 (Servir Mekong)

Land Cover 2005 (Servir Mekong)

Land Cover 2010 (Servir Mekong)

Land Cover 2015 (Servir Mekong)

Land Cover 2017 (Servir Mekong)

MODIS Land cover maps 2001-2018

Sentinel-2 NDVI 2020

Wetlands

Drought

Drought hotspot - high frequency

Drought hotspot - increasing frequency

MODIS NDWI - Drought frequency

Annual Average Drought Duration

Flood

Flood extent during October 2020

Baseline Flood Depth (100 years return period)

Change in Flood Depth (IPSL, RCP4.5, 2060)

Community Hazard at Pilot Area

6 hours flash flood

Climate Change

Change in Annual Precipitation (GFDL, RCP 8.5, 2050)

Change in Precipitation in Dry Season (GFDL, RCP 8.5, 2050)

Change in Precipitation in Wet Season (GFDL, RCP 8.5, 2050)

Change in Annual Precipitation (GISS, RCP 8.5, 2050)

Change in Precipitation in Dry Season (GISS, RCP 8.5, 2050)

Change in Precipitation in Wet Season (GISS, RCP 8.5, 2050)

Change in Annual Precipitation (IPSL, RCP 8.5, 2050)

Change in Precipitation in Dry Season (IPSL, RCP 8.5, 2050)

Change in Precipitation in Wet Season (IPSL, RCP 8.5, 2050)

Change in Annual Average Maximum Temperature (GFDL, RCP 8.5, 2050)

Change in Average Maximum Temperature in Dry Season (GFDL, RCP 8.5, 2050)

Change in Average Maximum Temperature in Wet Season (GFDL, RCP 8.5, 2050)

Change in Annual Average Maximum Temperature (GISS, RCP 8.5, 2050)

Change in Average Maximum Temperature in Dry Season (GISS, RCP 8.5, 2050)

Change in Average Maximum Temperature in Wet Season (GISS, RCP 8.5, 2050)

Change in Annual Average Maximum Temperature (IPSL, RCP 8.5, 2050)

Change in Average Maximum Temperature in Dry Season (IPSL, RCP 8.5, 2050)

Change in Average Maximum Temperature in Wet Season (IPSL, RCP 8.5, 2050)

Field work and demonstration sites

Overview map of field area 6A - Cambodia

Overview map of field area 6A - Thailand

Overview map of field area 6B - Thailand

Overview map of field area 6C - Cambodia

Overview map of field area 6D - Cambodia

Overview map of field area 7 - Cambodia

Overview map of field area 8 - Cambodia

Overview map of field area 9 - Thailand

Overview map of field area 10 - Thailand

Overview map of field area 12 - Cambodia

Overview map of field area 12 - Thailand

Demonstration project 1 - Reserviors & watersheds management

Demonstration project 1 - Sompoi reservoir and watershed

Demonstration project 1 - Taduang reservoir

Demonstration project 1 - UN reservoir

Demonstration project 2 - River bank stabilisation

Demonstration project 3 - Waste water managment

Demonstration project 3 - Waste water managment

Nature based Solutions for Flood and Drought Management

This catalogue presents a range of Nature-based Solutions (NbS) with potential to build flood and drought resilience in the 9C-9T sub-basin. The NbS are grouped by different sectors and purposes. Information on each NbS is displayed on a factsheet that can also be downloaded for future reference. Please select a measure to see more details.

Note that this page is under developement.Thus the description of some measures has not been available and some functions may not work properly.

Measure Effect Matrix

*Note: Runoff Reduction (RR), Water Availability (WA), Erosion Control (EC),Water Quality (WQ) and Biodiversity (B) are key measure effects

Main Function:; Side Effect: ✓

Headwaters, wetlands, hydromorphology

Sub-group	RR	WA	EC	WQ	B
Upstream	✓	✓	✓	✓
	✓	✓	✓	✓
	✓	✓	✓	✓
	✓	✓	✓	✓
Floodplains		✓	✓	✓	✓
		✓	✓	✓	✓
			✓		✓
			✓		✓
Basins and ponds		✓	✓	✓	✓
Basins and ponds	✓	✓		✓	✓
Instream Development		✓	✓		✓
			✓		✓
			✓
			✓
		✓	✓	✓	✓
River bank stabilisation	✓	✓			✓
	✓	✓			✓
	✓	✓			✓
	✓	✓			✓
	✓	✓			✓
	✓	✓			✓
	✓	✓			✓
	✓	✓			✓
	✓	✓			✓
	✓	✓			✓
	✓	✓			✓

Agricultural (rural, peri-urban)

Sub-group	RR	WA	EC	WQ	B
Stabilization of slopes	✓	✓
	✓	✓
	✓	✓			✓
Tillage	✓		✓
	✓		✓
	✓		✓
Soil Improvement				✓
				✓
				✓
				✓
Irrigation Management	✓		✓
	✓		✓
	✓		✓	✓	✓
	✓		✓
Land Management	✓	✓	✓	✓
	✓	✓	✓	✓
	✓	✓	✓	✓
		✓

Urban

Sub-group	RR	WA	EC	WQ	B
Basins and ponds		✓	✓	✓	✓
		✓	✓	✓	✓
	✓	✓	✓		✓
Rainwater Management		✓	✓	✓	✓
		✓		✓
		✓	✓	✓
		✓	✓	✓
		✓		✓
	✓

		✓
Greening	✓	✓	✓	✓
	✓	✓	✓	✓
	✓	✓	✓	✓
	✓

This page is under development.