HydroBASINS lev08 watershed · #5080130980
Bassin de Sungai Asahan
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 4 administrative regions : Asahan, Lake Toba, Tapanuli Utara, Toba Samosir
Sub-basin area
1 167,9km²
Upstream area
4 302,2km²
Discharge
157,39m³/s
Mean elev.
887m
Administrative coverage
Species present
Ecological tissue
Graphe en cours d’indexation
Calcul du tissu écologique de cette entité.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 2s).
Hydroclimate (BasinATLAS lev08)
Mean T°
21,9°C
Annual rain
2 208mm
Moisture idx (CMI)
0,30
Runoff
1 255mm/an
PET
1 540mm
AET
1 491mm
Mean slope
7,8°
Water table
264cm
Forest
38%
Crops
30%
Urban
10%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)