Ontologia

HydroBASINS lev08 watershed · #4081057190

Bassin de Sông Lam

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 1 administrative regions : Tương Dương

Pfafstetter: 44104057

Sub-basin area

159,3km²

Upstream area

13 105,1km²

Discharge

229,61m³/s

Mean elev.

398m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Sông Lam144 km²

▲ Receives from 2 basins

1 dept-equivalent regions (GADM L2)

2 intersecting protected areas

  • Western Nghe An

    IUCN Not Applicable

    UNESCO-MAB Biosphere Reserve

    158.84 km² overlap

  • Pu Mat

    IUCN II

    National Park

    0.28 km² overlap

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

Species present

9 distinct species · 28 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

28 obs · 2 cellules
Obs. / cellule
≥ 27
27–26
27–26
27–26
< 27

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°

23,1°C

Annual rain

1 423mm

Moisture idx (CMI)

-0,01

Runoff

657mm/an

PET

1 433mm

AET

995mm

Mean slope

16,7°

Water table

535cm

Forest

23%

Crops

3%

Urban

0%

Protected

2%

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