HydroBASINS lev08 watershed · #4080875100
Bassin de Ai 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 17 administrative regions across 2 countries : Athang, Chhudzom, Chhuzagang, Chirang, Dekiling +12
Sub-basin area
1 299,3km²
Upstream area
1 299,3km²
Discharge
34,31m³/s
Mean elev.
1 281m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
17 dept-equivalent regions (GADM L2)
- 496.1 km²38.2% of basin
- 217.1 km²16.7% of basin
- 209.4 km²16.1% of basin
- 89.9 km²6.9% of basin
- 78.4 km²6.0% of basin
- 63.2 km²4.9% of basin
- 54.7 km²4.2% of basin
- 54.4 km²4.2% of basin
9 moreFull L2 list
- Chhuzagang21.4 km² · 1.7%
- Phuntenchu6.4 km² · 0.5%
- Korpoog2.5 km² · 0.2%
- Chirang1.9 km² · 0.1%
- Pangkhar0.7 km² · 0.1%
- Trong0.7 km² · 0.1%
- Gakiling0.2 km² · 0.0%
- Athang0.1 km² · 0.0%
- Dunglegang0.0 km² · 0.0%
3 intersecting protected areas
National Park
269.92 km² overlap
Biological Corridor 3
IUCN VIBiological Corridor
250.18 km² overlap
Royal Manas National Park
IUCN IINational Park
132.66 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
884 distinct species · 35 040 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 22 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 Ai River : 16 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 26 interactions GloBI sur 3 types (connectance 11.3%, 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°
18,0°C
Annual rain
3 011mm
Moisture idx (CMI)
0,57
Runoff
846mm/an
PET
1 212mm
AET
1 025mm
Mean slope
19,7°
Water table
650cm
Forest
47%
Crops
9%
Urban
0%
Protected
49%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)