HydroBASINS lev08 watershed · #4080883700
Bassin de Torsa 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, Geling, Koch Bihar, Phuentshogpelri, Phuentsholing +2
Sub-basin area
852,6km²
Upstream area
4 542,2km²
Discharge
124,79m³/s
Mean elev.
153m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de ཨ་མོ་ཆུ་1852 km²
- Bassin de ཨ་མོ་ཆུ་418 km²
7 dept-equivalent regions (GADM L2)
- 371.1 km²43.6% of basin
- 366.8 km²43.1% of basin
- 64.2 km²7.5% of basin
- 46.8 km²5.5% of basin
- 1.9 km²0.2% of basin
- PhuentshogpelriSamtse · Bhutan0.3 km²0.0% of basin
- 0.1 km²0.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 116 distinct species · 13 589 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 Torsa river : 35 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 48 interactions GloBI sur 3 types (connectance 5.9%, 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°
23,8°C
Annual rain
3 526mm
Moisture idx (CMI)
0,60
Runoff
1 336mm/an
PET
1 398mm
AET
1 084mm
Mean slope
3,0°
Water table
118cm
Forest
3%
Crops
57%
Urban
15%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)