HydroBASINS lev08 watershed · #4080883970
Bassin de Jaldhaka
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 across 2 countries : Alipurduar, Koch Bihar, Lalmonirhat
Sub-basin area
347,1km²
Upstream area
3 659,8km²
Discharge
159,18m³/s
Mean elev.
56m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Hollong River563 km²
- Bassin de Jaldhaka15 km²
3 dept-equivalent regions (GADM L2)
- 341.5 km²98.6% of basin
- LalmonirhatRangpur · Bangladesh3.2 km²0.9% of basin
- 1.7 km²0.5% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
73 distinct species · 104 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 11 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 Jaldhaka : 11 espèces reliées par 8 interactions GloBI sur 4 types (connectance 14.5%, filtre Serrano α=0.2).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
24,3°C
Annual rain
2 979mm
Moisture idx (CMI)
0,52
Runoff
1 285mm/an
PET
1 431mm
AET
1 062mm
Mean slope
0,1°
Water table
4cm
Forest
0%
Crops
77%
Urban
14%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)