Weekly Wet Season Situation Report in the Lower Mekong River Basin - Prepared on: 22/09/2020, covering the week from 15 to 21 September 2020

1 Introduction

This Weekly Wet Season Situation Report presents a preliminary analysis of the weekly hydrological situation in the Lower Mekong River Basin (LMB) from 15 - 21 September 2020. The trend and outlook for water levels are also presented.

This analysis is based on the daily hydro-meteorological data provided by the Mekong River Commission (MRC) Member Countries – Cambodia, Lao PDR, Thailand, and Viet Nam – and on satellite data. All water level indicated in this report referred to above zero gauge of each station.

The report covers the following topics that are updated weekly:

• General weather patterns, including rainfall patterns over the LMB - Water levels in the LMB, including in the Tonle Sap

• Flash flood and drought situation in the LMB - Weather, water level and flash flood forecast, and - Possible implications.

Mekong River water levels are updated daily and can be accessed from: http://ffw.mrcmekong.org/bulletin_wet.php.

Drought monitoring and forecasting information is available at: http://droughtforecast.mrcmekong.org

Flash flood information is accessible at: http://ffw.mrcmekong.org/ffg.php