HydroBASINS lev08 watershed · #5080128080
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 5 administrative regions : Dairi, Deli Serdang, Karo, Langkat, Simalungun
Sub-basin area
1 288,7km²
Upstream area
1 288,7km²
Discharge
56,1m³/s
Mean elev.
1 155m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- 1121.0 km²87.4% of basin
- 115.7 km²9.0% of basin
- 36.7 km²2.9% of basin
- 9.6 km²0.7% of basin
- 0.0 km²0.0% of basin
5 intersecting protected areas
Gunung Leuser
IUCN IINational Park
180.03 km² overlap
Bukit Barisan
IUCN IIGrand Forest Park
146.51 km² overlap
Tropical Rainforest Heritage of Sumatra
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
45.91 km² overlap
Gunung Leuser National Park
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
36.47 km² overlap
Deleng Lancuk
IUCN Not ReportedNature Recreation Park
3.52 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 014 distinct species · 3 062 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 : 27 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 24 interactions GloBI sur 3 types (connectance 5.9%, filtre Serrano α=0.2). 2 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°
20,6°C
Annual rain
2 486mm
Moisture idx (CMI)
0,39
Runoff
1 295mm/an
PET
1 495mm
AET
1 460mm
Mean slope
8,0°
Water table
231cm
Forest
30%
Crops
45%
Urban
13%
Protected
30%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)