Ontologia

HydroBASINS lev08 watershed · #4081033690

Bassin · #4081033690

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 5 administrative regions across 2 countries : Ngoi, Sốp Cộp, Viengkham, Viengthong, Điện Biên

Pfafstetter: 44279808

Sub-basin area

627,8km²

Upstream area

627,8km²

Discharge

10,32m³/s

Mean elev.

904m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de ນຳ້ເຊັງ396 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

5 dept-equivalent regions (GADM L2)

  • Viengkham
    Louangphrabang · Laos
    549.4 km²
    87.8% of basin
  • Ngoi
    Louangphrabang · Laos
    66.9 km²
    10.7% of basin
  • Viengthong
    Houaphan · Laos
    8.7 km²
    1.4% of basin
  • Điện Biên
    Điện Biên · Vietnam
    0.7 km²
    0.1% of basin
  • Sốp Cộp
    Sơn La · Vietnam
    0.3 km²
    0.0% of basin

1 intersecting protected areas

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

Species present

1 distinct species · 1 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 obs · 1 cellules
Obs. / cellule
≥ 1
1–0
1–0
1–0
< 1

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°

20,8°C

Annual rain

1 622mm

Moisture idx (CMI)

0,11

Runoff

538mm/an

PET

1 445mm

AET

981mm

Mean slope

15,8°

Water table

548cm

Forest

0%

Crops

1%

Urban

0%

Protected

0%

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