HydroBASINS lev08 watershed · #4080883710
Bassin de Kāljāni River
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 7 administrative regions across 2 countries : Alipurduar, Bongo, Darla, Geling, Koch Bihar +2
Sub-basin area
1 483,1km²
Upstream area
1 483,4km²
Discharge
66,58m³/s
Mean elev.
237m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
7 dept-equivalent regions (GADM L2)
- 1099.3 km²74.3% of basin
- 235.0 km²15.9% of basin
- 71.8 km²4.9% of basin
- 47.9 km²3.2% of basin
- 25.0 km²1.7% of basin
- 1.1 km²0.1% of basin
- 0.3 km²0.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 325 distinct species · 51 236 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 20 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 Kāljāni River : 18 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 15 interactions GloBI sur 2 types (connectance 7.9%, filtre Serrano α=0.2). 2 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°
23,3°C
Annual rain
3 875mm
Moisture idx (CMI)
0,64
Runoff
1 376mm/an
PET
1 369mm
AET
1 092mm
Mean slope
4,7°
Water table
167cm
Forest
8%
Crops
41%
Urban
4%
Protected
13%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)