HydroBASINS lev08 watershed · #5080001760
Bassin de Batang Toru
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 : Humbang Hasundutan, Tapanuli Selatan, Tapanuli Tengah, Tapanuli Utara, Toba Samosir
Sub-basin area
3 407,1km²
Upstream area
3 407,1km²
Discharge
175,37m³/s
Mean elev.
899m
Administrative coverage
5 dept-equivalent regions (GADM L2)
- 1868.2 km²55.1% of basin
- 1232.5 km²36.3% of basin
- 197.6 km²5.8% of basin
- 89.9 km²2.7% of basin
- 3.7 km²0.1% of basin
6 intersecting protected areas
Dolok Sipirok
IUCN IaNature Reserve
72.14 km² overlap
Dolok Sibual-buali
IUCN IaNature Reserve
38.11 km² overlap
Lubuk Raya
IUCN IaNature Reserve
19.68 km² overlap
Sijaba Hutaginjang
IUCN VNature Recreation Park
1.07 km² overlap
Dolok Saut
IUCN IIINature Reserve
0.32 km² overlap
Muara Batang Toru KKP-06
IUCN Not ReportedMarine Protected Area
0.09 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 241 distinct species · 4 414 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Batang Toru : 25 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 29 interactions GloBI sur 5 types (connectance 5.5%, filtre Serrano α=0.2). 8 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°
21,8°C
Annual rain
2 541mm
Moisture idx (CMI)
0,37
Runoff
1 539mm/an
PET
1 560mm
AET
1 514mm
Mean slope
7,6°
Water table
231cm
Forest
59%
Crops
23%
Urban
3%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)