HydroBASINS lev08 watershed · #5080127460
Bassin de Lau Biang
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 : Karo, Langkat
Sub-basin area
353,5km²
Upstream area
1 897km²
Discharge
90,21m³/s
Mean elev.
665m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Lau Biang1289 km²
- Bassin de Lau Ntebah255 km²
2 dept-equivalent regions (GADM L2)
- 320.8 km²91.2% of basin
- 31.1 km²8.8% of basin
4 intersecting protected areas
Gunung Leuser
IUCN IINational Park
201.64 km² overlap
Gunung Leuser National Park
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
172.32 km² overlap
Tropical Rainforest Heritage of Sumatra
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
141.13 km² overlap
Bukit Barisan
IUCN IIGrand Forest Park
30.72 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
237 distinct species · 402 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 45 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 Lau Biang : 42 espèces dont 8 patrimoniales (LR IUCN CR/EN/VU) reliées par 34 interactions GloBI sur 4 types (connectance 3.4%, 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°
23,3°C
Annual rain
2 879mm
Moisture idx (CMI)
0,44
Runoff
1 522mm/an
PET
1 595mm
AET
1 583mm
Mean slope
12,7°
Water table
346cm
Forest
56%
Crops
44%
Urban
0%
Protected
82%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)