Ontologia

HydroBASINS lev08 watershed · #4080064530

Bassin · #4080064530

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 : Bắc Sơn, Hữu Lũng, Võ Nhai

EndorheicPfafstetter: 43670800

Sub-basin area

446,6km²

Upstream area

446,6km²

Discharge

5,07m³/s

Mean elev.

363m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Sông Thái Bình711 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

2 intersecting protected areas

  • Bac Son

    IUCN V

    Nature Reserve

    18.10 km² overlap

  • Huu Lien

    IUCN IV

    Nature Reserve

    1.77 km² overlap

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

Species present

23 distinct species · 33 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

33 obs · 8 cellules
Obs. / cellule
≥ 10
10–9
4–9
4–3
< 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 569mm

Moisture idx (CMI)

0,18

Runoff

660mm/an

PET

1 293mm

AET

1 052mm

Mean slope

13,8°

Water table

415cm

Forest

4%

Crops

26%

Urban

1%

Protected

4%

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