HydroBASINS lev08 watershed · #4080858850
Bassin de Teesta
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 6 administrative regions across 3 countries : Darjiling, East Sikkim, Norgaygang, North Sikkim, Shigatse +1
Sub-basin area
1 756,2km²
Upstream area
5 554,8km²
Discharge
140,33m³/s
Mean elev.
1 871m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Umaram Chu674 km²
- Bassin de Chakung Glong Chu329 km²
6 dept-equivalent regions (GADM L2)
- 866.9 km²49.4% of basin
- 388.9 km²22.2% of basin
- 284.6 km²16.2% of basin
- Darjiling211.1 km²12.0% of basin
- 1.4 km²0.1% of basin
- NorgaygangSamtse · Bhutan0.5 km²0.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 143 distinct species · 190 377 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 8 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 Teesta : 7 espèces reliées par 6 interactions GloBI sur 2 types (connectance 21.4%, filtre Serrano α=0.2). 1 bulle taxonomique (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°
14,5°C
Annual rain
2 159mm
Moisture idx (CMI)
0,43
Runoff
1 163mm/an
PET
1 059mm
AET
858mm
Mean slope
25,6°
Water table
885cm
Forest
79%
Crops
27%
Urban
5%
Protected
7%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)