Tonlé Sap River – Upstream Rainfall and Flood Situation

Upstream rainfall · Tonlé Sap

Past 72 hours
36 mm
Next 72 hours
107 mm
Status
Elevated
Water may arrive
27/09
Upstream sampling pointsPast 72 hoursNext 72 hours
Kampong Thom44 mm104 mm
Battambang23 mm132 mm
Pursat35 mm110 mm
Siem Reap40 mm100 mm
Cardamom highlands38 mm92 mm

This measures upstream rainfall, not river level. Official levels and discharge come from the Mekong River Commission (MRC). Upstream rainfall causes the level, and is visible several days earlier. MRC

River profile

Length
120 km
Basin
85,800 km²
Inside Cambodia
100%
Travel time
3d

Only 100% of the Tonlé Sap catchment lies inside Cambodia. The rest is abroad, and rain there raises the water here about 3 days later.

Provinces along this river

Discharge today (GloFAS)

4,731 m³/s at Kampong Chhnang · +0% near normal

21/094,731 m³/s
22/094,886 m³/s
23/095,163 m³/s
24/095,597 m³/s
25/096,236 m³/s
26/097,078 m³/s
27/098,278 m³/s

GloFAS model data (Copernicus), not official gauge readings — use for trend, not as a substitute for official flood warnings.