HydroBASINS lev08 watershed · #5080022790
Bassin de Ilian River
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 : Dumaran, Roxas, San Vicente, Taytay
Sub-basin area
347,9km²
Upstream area
347,9km²
Discharge
8,54m³/s
Mean elev.
96m
Administrative coverage
4 dept-equivalent regions (GADM L2)
- Dumaran189.8 km²54.8% of basin
- 98.7 km²28.5% of basin
- Roxas43.2 km²12.5% of basin
- San Vicente14.7 km²4.2% of basin
3 intersecting protected areas
Palawan Game Refuge and Bird Sanctuary (Proc 219)
IUCN Not AssignedGame Refuge and Bird Sanctuary
304.73 km² overlap
Protected Landscape
36.58 km² overlap
Entire Province of Palawan (Proc 2152) Mangrove Swamp Forest Reserve
IUCN Not AssignedMangrove Swamp Forest Reserve
5.24 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
37 distinct species · 53 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 129mm
Moisture idx (CMI)
0,30
Runoff
1 024mm/an
PET
1 480mm
AET
1 168mm
Mean slope
9,0°
Water table
344cm
Forest
28%
Crops
26%
Urban
0%
Protected
100%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)