HydroBASINS lev08 watershed · #4080910920
Bassin de Brahmaputra
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 4 administrative regions across 2 countries : Dhubri, Gaibandha, Kurigram, West Garo Hills
Sub-basin area
801,1km²
Upstream area
499 594,8km²
Discharge
21 082,56m³/s
Mean elev.
90m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Jaldhaka1698 km²
- Bassin de Gangadhar44 km²
4 dept-equivalent regions (GADM L2)
- 381.2 km²47.7% of basin
- KurigramRangpur · Bangladesh320.9 km²40.1% of basin
- 85.3 km²10.7% of basin
- GaibandhaRangpur · Bangladesh12.2 km²1.5% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
165 distinct species · 855 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 Brahmaputra : 23 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 30 interactions GloBI sur 3 types (connectance 7.4%, 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°
24,6°C
Annual rain
2 569mm
Moisture idx (CMI)
0,45
Runoff
1 071mm/an
PET
1 392mm
AET
1 053mm
Mean slope
1,9°
Water table
97cm
Forest
15%
Crops
49%
Urban
5%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)