HydroBASINS lev08 watershed · #4080903170
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 : Koch Bihar, Kurigram, Lalmonirhat
Sub-basin area
1 697,6km²
Upstream area
5 929,4km²
Discharge
245,13m³/s
Mean elev.
38m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Jarda nadi572 km²
- Bassin de Jaldhaka347 km²
3 dept-equivalent regions (GADM L2)
- 955.0 km²56.4% of basin
- KurigramRangpur · Bangladesh474.1 km²28.0% of basin
- LalmonirhatRangpur · Bangladesh265.3 km²15.7% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
170 distinct species · 368 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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 : 37 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 44 interactions GloBI sur 5 types (connectance 5.4%, filtre Serrano α=0.2). 4 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°
24,6°C
Annual rain
2 742mm
Moisture idx (CMI)
0,47
Runoff
1 148mm/an
PET
1 441mm
AET
1 066mm
Mean slope
0,1°
Water table
5cm
Forest
0%
Crops
81%
Urban
10%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)