HydroBASINS lev08 watershed · #5080019890
Bassin de Sungai Serudong
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 4 administrative regions across 2 countries : Nabawan, Nunukan, Tawau, Tongod
Sub-basin area
1 116,1km²
Upstream area
1 116,4km²
Discharge
26,81m³/s
Mean elev.
442m
Administrative coverage
4 dept-equivalent regions (GADM L2)
- 865.0 km²77.8% of basin
- 231.3 km²20.8% of basin
- Nunukan6.7 km²0.6% of basin
- 4.2 km²0.4% of basin
5 intersecting protected areas
Sungai Serudong
IUCN IaForest Reserve
58.70 km² overlap
Mengilan
IUCN IaForest Reserve
37.37 km² overlap
Silimpopon
IUCN IaForest Reserve
18.77 km² overlap
Tawau
IUCN IaForest Reserve
12.64 km² overlap
Forest Reserve
0.05 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
256 distinct species · 347 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 11 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 Serudong : 11 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 9 interactions GloBI sur 2 types (connectance 16.4%, filtre Serrano α=0.2).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
24,8°C
Annual rain
2 429mm
Moisture idx (CMI)
0,41
Runoff
987mm/an
PET
1 427mm
AET
1 427mm
Mean slope
10,4°
Water table
323cm
Forest
81%
Crops
15%
Urban
0%
Protected
5%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)