Ontologia

HydroBASINS lev08 watershed · #4081003620

Bassin de Nậm Mạ

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 : Sìn Hồ, Tủa Chùa

Pfafstetter: 43685078

Sub-basin area

148,9km²

Upstream area

148,9km²

Discharge

5,44m³/s

Mean elev.

858m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Sông Đà33 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

  • Sìn Hồ
    Lai Châu · Vietnam
    148.5 km²
    100.0% of basin
  • Tủa Chùa
    Điện Biên · Vietnam
    0.0 km²
    0.0% of basin

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

Species present

3 distinct species · 5 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

5 obs · 3 cellules
Obs. / cellule
≥ 2
2–1
2–1
2–1
< 2

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°

20,5°C

Annual rain

1 727mm

Moisture idx (CMI)

0,22

Runoff

1 152mm/an

PET

1 349mm

AET

1 052mm

Mean slope

18,4°

Water table

635cm

Forest

12%

Crops

2%

Urban

0%

Protected

0%

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