Ontologia

HydroBASINS lev08 watershed · #4081015030

Bassin de Sông Đà

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 6 administrative regions : Quỳnh Nhai, Sìn Hồ, Thuận Châu, Tuần Giáo, Tân Uyên +1

Pfafstetter: 43685075

Sub-basin area

831,8km²

Upstream area

37 594,6km²

Discharge

1 021,27m³/s

Mean elev.

593m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Sông Đà121 km²

▲ Receives from 2 basins

6 dept-equivalent regions (GADM L2)

  • Quỳnh Nhai
    Sơn La · Vietnam
    482.7 km²
    58.2% of basin
  • Tủa Chùa
    Điện Biên · Vietnam
    210.1 km²
    25.3% of basin
  • Sìn Hồ
    Lai Châu · Vietnam
    100.2 km²
    12.1% of basin
  • Tuần Giáo
    Điện Biên · Vietnam
    33.2 km²
    4.0% of basin
  • Tân Uyên
    Lai Châu · Vietnam
    1.8 km²
    0.2% of basin
  • Thuận Châu
    Sơn La · Vietnam
    1.6 km²
    0.2% of basin

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

Species present

5 distinct species · 32 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

32 obs · 6 cellules
Obs. / cellule
≥ 16
16–15
8–15
4–7
< 4

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°

21,7°C

Annual rain

1 766mm

Moisture idx (CMI)

0,20

Runoff

936mm/an

PET

1 410mm

AET

1 075mm

Mean slope

18,3°

Water table

595cm

Forest

4%

Crops

1%

Urban

1%

Protected

0%

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