HydroBASINS lev08 watershed · #4080764450
Bassin de Ganga
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 : Dehradun, Garhwal, Tehri Garhwal
Sub-basin area
307,6km²
Upstream area
22 005,3km²
Discharge
541,78m³/s
Mean elev.
754m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Parry River279 km²
- Bassin de Ganga7 km²
3 dept-equivalent regions (GADM L2)
- 186.9 km²60.8% of basin
- 94.7 km²30.8% of basin
- 25.6 km²8.3% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
664 distinct species · 20 143 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Ganga : 31 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 36 interactions GloBI sur 3 types (connectance 6.1%, 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°
21,1°C
Annual rain
1 832mm
Moisture idx (CMI)
0,19
Runoff
577mm/an
PET
1 441mm
AET
924mm
Mean slope
16,1°
Water table
546cm
Forest
52%
Crops
17%
Urban
17%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)