Ontologia

HydroBASINS lev08 watershed · #4081025390

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 : Sông Mã, Sốp Cộp, Thuận Châu, Điện Biên Đông

Pfafstetter: 44102097

Sub-basin area

467,2km²

Upstream area

3 727,8km²

Discharge

74,63m³/s

Mean elev.

808m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Sông Mã169 km²

▲ Receives from 2 basins

4 dept-equivalent regions (GADM L2)

  • Sông Mã
    Sơn La · Vietnam
    402.6 km²
    86.4% of basin
  • Thuận Châu
    Sơn La · Vietnam
    62.7 km²
    13.5% of basin
  • Điện Biên Đông
    Điện Biên · Vietnam
    0.6 km²
    0.1% of basin
  • Sốp Cộp
    Sơn La · Vietnam
    0.1 km²
    0.0% of basin

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

16 distinct species · 26 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

26 obs · 5 cellules
Obs. / cellule
≥ 10
10–9
7–9
7–6
< 7

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Not enough documented interactions to build a meaningful graph for this territory.

Hydroclimate (BasinATLAS lev08)

Mean T°

20,7°C

Annual rain

1 625mm

Moisture idx (CMI)

0,13

Runoff

590mm/an

PET

1 406mm

AET

993mm

Mean slope

16,8°

Water table

617cm

Forest

2%

Crops

1%

Urban

0%

Protected

14%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)