Ontologia

HydroBASINS lev08 watershed · #4081023270

Bassin de Sông Đà

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 13 administrative regions : Ba Vì, Cao Phong, Hòa Bình, Kim Bôi, Kỳ Sơn +8

51% lakePfafstetter: 43685011

Sub-basin area

1 812,3km²

Upstream area

51 221km²

Discharge

1 419,01m³/s

Mean elev.

279m

Administrative coverage

Hydrographic chain

Drains into

Receives from 3 basins

13 dept-equivalent regions (GADM L2)

5 more
  • Tân Lạc70.1 km² · 3.9%
  • Vân Hồ28.6 km² · 1.6%
  • Tam Nông5.1 km² · 0.3%
  • Kim Bôi2.4 km² · 0.1%
  • Lâm Thao0.5 km² · 0.0%

5 intersecting protected areas

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

Species present

679 distinct species · 1 157 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 157 obs · 42 cellules
Obs. / cellule
≥ 169
82–168
23–81
8–22
< 8

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Sample of 22 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.

ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Sông Đà : 19 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 17 interactions GloBI sur 4 types (connectance 6.7%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
23
Interactions affichées
17
Connectance
0.067
Patrimoniales
2
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

22,4°C

Annual rain

1 661mm

Moisture idx (CMI)

0,21

Runoff

938mm/an

PET

1 314mm

AET

1 031mm

Mean slope

12,1°

Water table

421cm

Forest

2%

Crops

33%

Urban

5%

Protected

5%

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