Ontologia

HydroBASINS lev08 watershed · #4080911290

Bassin de Sunsari Nadi

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 6 administrative regions across 2 countries : Araria, Bhagalpur, Koshi, Madhepura, Purnia +1

Pfafstetter: 45242104

Sub-basin area

1 630,5km²

Upstream area

1 630,8km²

Discharge

44,6m³/s

Mean elev.

94m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Koshi312 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

6 dept-equivalent regions (GADM L2)

3 intersecting protected areas

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

Species present

720 distinct species · 6 722 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

6 722 obs · 21 cellules
Obs. / cellule
≥ 2 009
919–2 008
216–918
67–215
< 67

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

Ecological tissue

Sample of 29 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 Sunsari Nadi : 24 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 29 interactions GloBI sur 3 types (connectance 7.1%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
29
Interactions affichées
29
Connectance
0.071
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°

24,7°C

Annual rain

1 465mm

Moisture idx (CMI)

-0,07

Runoff

759mm/an

PET

1 551mm

AET

898mm

Mean slope

0,8°

Water table

24cm

Forest

6%

Crops

69%

Urban

14%

Protected

1%

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