HydroBASINS lev08 watershed · #4080921220
Bassin de Ganga
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 5 administrative regions : Bhagalpur, Godda, Katihar, Maldah, Sahibganj
Sub-basin area
922,4km²
Upstream area
913 036,1km²
Discharge
12 768,07m³/s
Mean elev.
44m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Kosi River1923 km²
- Bassin de Ganga840 km²
5 dept-equivalent regions (GADM L2)
- 325.7 km²35.4% of basin
- 294.5 km²32.0% of basin
- 212.1 km²23.0% of basin
- Maldah86.7 km²9.4% of basin
- 1.5 km²0.2% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
139 distinct species · 1 029 observations
Source: GBIF Occurrence snapshot 2026-05-01.
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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Ganga : 22 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 37 interactions GloBI sur 3 types (connectance 9.1%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
25,0°C
Annual rain
1 277mm
Moisture idx (CMI)
-0,19
Runoff
703mm/an
PET
1 577mm
AET
874mm
Mean slope
1,0°
Water table
68cm
Forest
8%
Crops
79%
Urban
12%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)