Ontologia

HydroBASINS lev08 watershed · #4081022160

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 9 administrative regions across 2 countries : Mường Ảng, Ngoi, Sông Mã, Sốp Cộp, Thuận Châu +4

Pfafstetter: 44102099

Sub-basin area

1 849,3km²

Upstream area

1 849,4km²

Discharge

34,11m³/s

Mean elev.

1 015m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Sông Mã467 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

9 dept-equivalent regions (GADM L2)

  • Điện Biên Đông
    Điện Biên · Vietnam
    958.5 km²
    52.0% of basin
  • Sốp Cộp
    Sơn La · Vietnam
    505.0 km²
    27.4% of basin
  • Điện Biên
    Điện Biên · Vietnam
    303.4 km²
    16.5% of basin
  • Viengkham
    Louangphrabang · Laos
    62.8 km²
    3.4% of basin
  • Sông Mã
    Sơn La · Vietnam
    12.8 km²
    0.7% of basin
  • Ngoi
    Louangphrabang · Laos
    0.7 km²
    0.0% of basin
  • Mường Ảng
    Điện Biên · Vietnam
    0.7 km²
    0.0% of basin
  • Thuận Châu
    Sơn La · Vietnam
    0.3 km²
    0.0% of basin
1 more
  • Viengthong0.1 km² · 0.0%

2 intersecting protected areas

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

Species present

37 distinct species · 72 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

72 obs · 11 cellules
Obs. / cellule
≥ 23
19–22
6–18
3–5
< 3

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

Ecological tissue

Sample of 14 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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Sông Mã : 12 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 10 interactions GloBI sur 3 types (connectance 11.0%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
14
Interactions affichées
10
Connectance
0.110
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

19,8°C

Annual rain

1 680mm

Moisture idx (CMI)

0,18

Runoff

591mm/an

PET

1 378mm

AET

981mm

Mean slope

17,3°

Water table

606cm

Forest

1%

Crops

1%

Urban

1%

Protected

0%

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