HydroBASINS lev08 watershed · #5080003890
Bassin · #5080003890
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, Dumai
Sub-basin area
558,6km²
Upstream area
558,6km²
Discharge
16,14m³/s
Mean elev.
24m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 325.3 km²58.5% of basin
- 230.6 km²41.5% of basin
2 intersecting protected areas
Sungai Dumai
IUCN VNature Recreation Park
1.55 km² overlap
Giam Siak Kecil
IUCN IVWildlife Reserve
0.12 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
39 distinct species · 46 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 644mm
Moisture idx (CMI)
0,36
Runoff
1 029mm/an
PET
1 695mm
AET
1 690mm
Mean slope
0,7°
Water table
21cm
Forest
39%
Crops
26%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)