Ontologia

HydroBASINS lev08 watershed · #4081034420

Bassin de ນຳ້ແອດ

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 3 administrative regions across 2 countries : Sốp Cộp, Viengkham, Viengthong

Pfafstetter: 44102088

Sub-basin area

324,3km²

Upstream area

324,4km²

Discharge

4,54m³/s

Mean elev.

1 109m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de ນຳ້ແອດ941 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

  • Viengthong
    Houaphan · Laos
    238.2 km²
    73.7% of basin
  • Viengkham
    Louangphrabang · Laos
    80.6 km²
    24.9% of basin
  • Sốp Cộp
    Sơn La · Vietnam
    4.6 km²
    1.4% of basin

1 intersecting protected areas

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°

19,5°C

Annual rain

1 579mm

Moisture idx (CMI)

0,13

Runoff

456mm/an

PET

1 364mm

AET

959mm

Mean slope

18,3°

Water table

637cm

Forest

1%

Crops

1%

Urban

0%

Protected

34%

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