HydroBASINS lev08 watershed · #4081027490
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 2 administrative regions : Mai Sơn, Sông Mã
Sub-basin area
169,2km²
Upstream area
4 628,8km²
Discharge
89,16m³/s
Mean elev.
683m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Sông Mã732 km²
- Bassin de Sông Mã467 km²
2 dept-equivalent regions (GADM L2)
- Sông MãSơn La · Vietnam165.9 km²98.3% of basin
- 2.8 km²1.7% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 distinct species · 14 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°
21,3°C
Annual rain
1 520mm
Moisture idx (CMI)
0,06
Runoff
545mm/an
PET
1 426mm
AET
989mm
Mean slope
16,5°
Water table
552cm
Forest
0%
Crops
2%
Urban
4%
Protected
36%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)