HydroBASINS lev08 watershed · #4081149370
Bassin de Tonlé Wayko
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 13 administrative regions across 2 countries : Ba Phnum, Kamchay Mear, Kampong Rou, Kampong Trabaek, Me Sang +8
Sub-basin area
1 656,4km²
Upstream area
1 656,7km²
Discharge
44,09m³/s
Mean elev.
6m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
13 dept-equivalent regions (GADM L2)
- Svay ChrumSvay Rieng · Cambodia389.3 km²23.6% of basin
- 366.7 km²22.2% of basin
- 203.6 km²12.3% of basin
- 195.5 km²11.8% of basin
- 121.7 km²7.4% of basin
- Svay RiengSvay Rieng · Cambodia103.4 km²6.3% of basin
- Kampong RouSvay Rieng · Cambodia85.3 km²5.2% of basin
- 82.9 km²5.0% of basin
5 moreFull L2 list
- Ba Phnum45.0 km² · 2.7%
- Romeas Haek19.7 km² · 1.2%
- Kamchay Mear14.6 km² · 0.9%
- Kampong Trabaek11.5 km² · 0.7%
- Tân Hưng10.8 km² · 0.7%
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
112 distinct species · 401 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Tonlé Wayko : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 38 interactions GloBI sur 3 types (connectance 6.0%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
27,7°C
Annual rain
1 500mm
Moisture idx (CMI)
-0,06
Runoff
835mm/an
PET
1 591mm
AET
1 115mm
Mean slope
0,0°
Water table
2cm
Forest
1%
Crops
60%
Urban
4%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)