HydroBASINS lev08 watershed · #4081036600
Bassin de Sông Mã
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 4 administrative regions across 2 countries : Mường Lát, Sopbao, Viengxay, Xamneua
Sub-basin area
486km²
Upstream area
486km²
Discharge
9,59m³/s
Mean elev.
796m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 290.2 km²59.9% of basin
- 185.2 km²38.2% of basin
- 7.9 km²1.6% of basin
- 1.3 km²0.3% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
29 distinct species · 54 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Not enough documented interactions to build a meaningful graph for this territory.
Hydroclimate (BasinATLAS lev08)
Mean T°
20,5°C
Annual rain
1 305mm
Moisture idx (CMI)
-0,02
Runoff
622mm/an
PET
1 337mm
AET
927mm
Mean slope
16,0°
Water table
613cm
Forest
3%
Crops
3%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)