HydroBASINS lev08 watershed · #4080964570
Bassin de Ajay
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 3 administrative regions : Barddhaman, Birbhum, Murshidabad
Sub-basin area
663km²
Upstream area
6 118,2km²
Discharge
134,83m³/s
Mean elev.
27m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ajay800 km²
- Bassin de Ajay638 km²
3 dept-equivalent regions (GADM L2)
- Barddhaman338.3 km²51.2% of basin
- 297.2 km²44.9% of basin
- Murshidabad26.0 km²3.9% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
253 distinct species · 4 507 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Ajay : 25 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 48 interactions GloBI sur 3 types (connectance 9.1%, 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°
26,4°C
Annual rain
1 317mm
Moisture idx (CMI)
-0,19
Runoff
710mm/an
PET
1 632mm
AET
941mm
Mean slope
0,1°
Water table
13cm
Forest
0%
Crops
81%
Urban
7%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)