HydroBASINS lev08 watershed · #5080141750
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
182,5km²
Upstream area
2 083,1km²
Discharge
79,46m³/s
Mean elev.
37m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Sungai Mandau273 km²
- Bassin de Sungai Mandau169 km²
2 dept-equivalent regions (GADM L2)
- 156.7 km²86.3% of basin
- 25.0 km²13.7% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 distinct species · 1 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°
26,9°C
Annual rain
2 763mm
Moisture idx (CMI)
0,38
Runoff
1 187mm/an
PET
1 724mm
AET
1 701mm
Mean slope
1,4°
Water table
34cm
Forest
28%
Crops
41%
Urban
22%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)