HydroBASINS lev08 watershed · #5080114610
Bassin de Ilagan 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 7 administrative regions : Casiguran, Dilasag, Dinapigue, Echague, Maddela +2
Sub-basin area
666,9km²
Upstream area
667km²
Discharge
43,58m³/s
Mean elev.
795m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
7 dept-equivalent regions (GADM L2)
- 152.3 km²22.9% of basin
- 143.8 km²21.6% of basin
- 103.2 km²15.5% of basin
- 87.5 km²13.2% of basin
- 79.9 km²12.0% of basin
- Casiguran53.6 km²8.1% of basin
- 44.3 km²6.7% of basin
2 intersecting protected areas
Protected Landscape
81.12 km² overlap
Protected Landscape
0.41 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
15 distinct species · 20 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°
22,7°C
Annual rain
3 127mm
Moisture idx (CMI)
0,54
Runoff
1 934mm/an
PET
1 430mm
AET
1 413mm
Mean slope
17,3°
Water table
582cm
Forest
100%
Crops
9%
Urban
0%
Protected
12%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)