HydroBASINS lev08 watershed · #5080141130
Bassin de Sungai Mandau
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 : Bengkalis, Siak
Sub-basin area
169km²
Upstream area
1 627,9km²
Discharge
61,9m³/s
Mean elev.
22m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Sungai Mandau297 km²
- Bassin de Sungai Mandau230 km²
2 dept-equivalent regions (GADM L2)
- 139.4 km²82.9% of basin
- 28.8 km²17.1% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
0 distinct species · 0 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Not enough documented interactions to build a meaningful graph for this territory.
Hydroclimate (BasinATLAS lev08)
Mean T°
27,0°C
Annual rain
2 780mm
Moisture idx (CMI)
0,38
Runoff
1 155mm/an
PET
1 721mm
AET
1 704mm
Mean slope
1,2°
Water table
39cm
Forest
16%
Crops
36%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)