HydroBASINS lev08 watershed · #5080020270
Bassin de Sungai Kayan
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 2 administrative regions : Berau, Bulungan
Sub-basin area
829,9km²
Upstream area
29 917,3km²
Discharge
1 541,32m³/s
Mean elev.
95m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Sungai Kayan792 km²
- Bassin de Sungai Kayan515 km²
2 dept-equivalent regions (GADM L2)
- 755.4 km²91.4% of basin
- 31.0 km²3.8% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
110 distinct species · 166 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 24 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 Sungai Kayan : 21 espèces reliées par 16 interactions GloBI sur 4 types (connectance 5.8%, filtre Serrano α=0.2). 3 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°
26,4°C
Annual rain
2 701mm
Moisture idx (CMI)
0,45
Runoff
1 270mm/an
PET
1 474mm
AET
1 474mm
Mean slope
5,0°
Water table
142cm
Forest
65%
Crops
22%
Urban
2%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)