HydroBASINS lev08 watershed · #4080020950
Bassin de Sungai Bernam
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 6 administrative regions : Batang Padang, Hilir Perak, Hulu Selangor, Lipis, Raub +1
Sub-basin area
2 595,8km²
Upstream area
2 595,9km²
Discharge
109,71m³/s
Mean elev.
195m
Administrative coverage
6 dept-equivalent regions (GADM L2)
- 1145.1 km²44.3% of basin
- 605.0 km²23.4% of basin
- 474.9 km²18.4% of basin
- 345.1 km²13.4% of basin
- 9.7 km²0.4% of basin
- 4.6 km²0.2% of basin
9 intersecting protected areas
Bukit Slim
IUCN VIForest Reserve
81.86 km² overlap
Selangor State Park
IUCN IIForest Reserve
80.20 km² overlap
Behrang
IUCN VIForest Reserve
26.33 km² overlap
Sungai Dusun
IUCN IbWildlife Reserve
14.16 km² overlap
Gading
IUCN VIForest Reserve
7.44 km² overlap
Forest Reserve
5.99 km² overlap
Batu Talam, Sungai Sia
IUCN IbForest Reserve
2.61 km² overlap
Batu Talam
IUCN IbForest Reserve
2.18 km² overlap
Ulu Jelai
IUCN IbForest Reserve
2.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 246 distinct species · 5 026 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Bernam : 33 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 40 interactions GloBI sur 3 types (connectance 5.7%, filtre Serrano α=0.2). 5 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°
26,1°C
Annual rain
2 600mm
Moisture idx (CMI)
0,33
Runoff
1 275mm/an
PET
1 721mm
AET
1 672mm
Mean slope
5,1°
Water table
133cm
Forest
34%
Crops
33%
Urban
3%
Protected
18%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)