HydroBASINS lev08 watershed · #4080732030
Bassin de Topu Chu
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 3 countries : Ngari, Pithoragarh
Sub-basin area
597,8km²
Upstream area
597,8km²
Discharge
16,4m³/s
Mean elev.
4 924m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 593.7 km²99.4% of basin
- Pithoragarh1.9 km²0.3% of basin
- 1.6 km²0.3% of basin
1 intersecting protected areas
Nanda Devi
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
12.93 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
17 distinct species · 20 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Not enough documented interactions to build a meaningful graph for this territory.
Hydroclimate (BasinATLAS lev08)
Mean T°
-2,1°C
Annual rain
699mm
Moisture idx (CMI)
0,12
Runoff
866mm/an
PET
612mm
AET
534mm
Mean slope
13,8°
Water table
498cm
Forest
0%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)