HydroBASINS lev08 watershed · #4081042900
Bassin de ลำน้ำงาว
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 7 administrative regions across 2 countries : Chiang Khong, Houixai, Khun Tan, Paktha, Pha Oudom +2
Sub-basin area
802,8km²
Upstream area
213 590,8km²
Discharge
2 885,59m³/s
Mean elev.
614m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de แม่น้ำอิง1095 km²
- Bassin de แม่น้ำโขง / ແມ່ນ້ຳຂອງ311 km²
7 dept-equivalent regions (GADM L2)
- 467.6 km²58.4% of basin
- 274.6 km²34.3% of basin
- 37.7 km²4.7% of basin
- 12.8 km²1.6% of basin
- 4.7 km²0.6% of basin
- 3.0 km²0.4% of basin
- 0.1 km²0.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
463 distinct species · 5 447 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 ลำน้ำงาว : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 33 interactions GloBI sur 3 types (connectance 8.1%, filtre Serrano α=0.2). 5 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°
23,6°C
Annual rain
1 609mm
Moisture idx (CMI)
-0,03
Runoff
400mm/an
PET
1 660mm
AET
1 068mm
Mean slope
11,4°
Water table
403cm
Forest
10%
Crops
14%
Urban
3%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)