HydroBASINS lev08 watershed · #4080994110
Bassin de Hooghly
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 : Haora, Hugli, Kolkata, North 24 Parganas, South 24 Parganas
Sub-basin area
445,8km²
Upstream area
28 048,3km²
Discharge
634,8m³/s
Mean elev.
8m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Churni1260 km²
- Bassin de DVC Canal663 km²
5 dept-equivalent regions (GADM L2)
- 192.5 km²43.3% of basin
- Haora88.3 km²19.8% of basin
- 78.7 km²17.7% of basin
- 70.0 km²15.7% of basin
- 15.3 km²3.4% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 714 distinct species · 365 688 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 26 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 Hooghly : 21 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 34 interactions GloBI sur 3 types (connectance 9.7%, filtre Serrano α=0.2). 6 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°
26,3°C
Annual rain
1 656mm
Moisture idx (CMI)
0,05
Runoff
844mm/an
PET
1 570mm
AET
1 013mm
Mean slope
0,3°
Water table
21cm
Forest
0%
Crops
20%
Urban
97%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)