Ontologia

HydroBASINS lev08 watershed · #4080843810

Bassin de Reu

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 2 administrative regions across 2 countries : Narayani, Pashchim Champaran

Pfafstetter: 45243642

Sub-basin area

459,2km²

Upstream area

459,2km²

Discharge

18,3m³/s

Mean elev.

333m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Narayani137 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

3 intersecting protected areas

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

Species present

692 distinct species · 23 178 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

23 178 obs · 14 cellules
Obs. / cellule
≥ 13 114
3 444–13 113
1 005–3 443
569–1 004
< 569

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

Ecological tissue

Sample of 28 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 Reu : 24 espèces dont 4 patrimoniales (LR IUCN CR/EN/VU) reliées par 24 interactions GloBI sur 3 types (connectance 6.3%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
28
Interactions affichées
24
Connectance
0.064
Patrimoniales
4
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°

23,4°C

Annual rain

1 768mm

Moisture idx (CMI)

0,13

Runoff

1 256mm/an

PET

1 531mm

AET

960mm

Mean slope

6,1°

Water table

288cm

Forest

72%

Crops

13%

Urban

2%

Protected

99%

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