HydroBASINS lev08 watershed · #4080902870
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 4 administrative regions : Bhojpur, Patna, Rohtas, Saran
Sub-basin area
1 320,7km²
Upstream area
655 839,5km²
Discharge
7 023,05m³/s
Mean elev.
67m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ganga2667 km²
- Bassin de Ghaghara55 km²
4 dept-equivalent regions (GADM L2)
- 992.5 km²75.3% of basin
- 276.9 km²21.0% of basin
- 45.3 km²3.4% of basin
- 3.3 km²0.3% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
135 distinct species · 382 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 43 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 : 35 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 43 interactions GloBI sur 3 types (connectance 4.8%, filtre Serrano α=0.2). 8 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°
26,2°C
Annual rain
976mm
Moisture idx (CMI)
-0,40
Runoff
408mm/an
PET
1 627mm
AET
750mm
Mean slope
0,1°
Water table
9cm
Forest
0%
Crops
83%
Urban
12%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)