HydroBASINS lev08 watershed · #5080018280
Bassin de Sungai Belait
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 10 administrative regions across 2 countries : Bukit Sawat, Kuala Balai, Kuala Belait, Labi, Liang +5
Sub-basin area
2 449,6km²
Upstream area
2 449,6km²
Discharge
137,24m³/s
Mean elev.
60m
Administrative coverage
10 dept-equivalent regions (GADM L2)
- 728.8 km²29.9% of basin
- 606.5 km²24.9% of basin
- 384.7 km²15.8% of basin
- 299.2 km²12.3% of basin
- 262.9 km²10.8% of basin
- 59.5 km²2.4% of basin
- 53.5 km²2.2% of basin
- 25.2 km²1.0% of basin
14 intersecting protected areas
Forest Reserve
177.66 km² overlap
Forest Reserve
64.18 km² overlap
Tasek Merimbun
IUCN IINational Park and ASEAN Heritage Park
20.16 km² overlap
Ulu Mendaram (Conservation)
IUCN IaForest Reserve
19.35 km² overlap
Forest Reserve
7.88 km² overlap
Forest Reserve
7.01 km² overlap
Gunung Mulu National Park
IUCN IINational Park
4.84 km² overlap
Ulu Badas (Conservation)
IUCN IaForest Reserve
4.17 km² overlap
Forest Reserve
3.94 km² overlap
5 more protected areassorted by overlap area
Bukit Sawat (Conservation)
IUCN IaForest Reserve
2.77 km² overlap
Forest Reserve
2.71 km² overlap
Gunung Mulu National Park
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
0.93 km² overlap
Badas (Conservation)
IUCN IaForest Reserve
0.80 km² overlap
Forest Reserve
0.39 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 184 distinct species · 8 731 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Belait : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 25 interactions GloBI sur 3 types (connectance 5.4%, 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°
27,0°C
Annual rain
3 299mm
Moisture idx (CMI)
0,55
Runoff
1 775mm/an
PET
1 466mm
AET
1 466mm
Mean slope
2,1°
Water table
54cm
Forest
97%
Crops
2%
Urban
1%
Protected
51%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)