HydroBASINS lev08 watershed · #4080846650
Bassin de अरुण नदी
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 : Koshi, Mechi, Sagarmatha
Sub-basin area
1 127km²
Upstream area
27 053,6km²
Discharge
497,98m³/s
Mean elev.
2 856m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Medokchheje Khola544 km²
- Bassin de Barun River453 km²
3 dept-equivalent regions (GADM L2)
- 1122.1 km²99.7% of basin
- 2.9 km²0.3% of basin
- 0.2 km²0.0% of basin
2 intersecting protected areas
Makalu-Barun
IUCN IINational Park
396.31 km² overlap
Makalu-Barun - Buffer Zone
IUCN VINational Park - Buffer Zone
259.94 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 200 distinct species · 3 370 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 26 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 अरुण नदी : 15 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 26 interactions GloBI sur 3 types (connectance 8.0%, filtre Serrano α=0.2). 11 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°
9,9°C
Annual rain
1 731mm
Moisture idx (CMI)
0,29
Runoff
1 408mm/an
PET
994mm
AET
821mm
Mean slope
30,0°
Water table
978cm
Forest
71%
Crops
6%
Urban
0%
Protected
58%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)