HydroBASINS lev08 watershed · #5080116670
Bassin de Bicol 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 15 administrative regions : Bombon, Bula, Calabanga, Camaligan, Canaman +10
Sub-basin area
508,4km²
Upstream area
2 151,1km²
Discharge
102m³/s
Mean elev.
65m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Pawili River237 km²
- Bassin de Bicol River229 km²
15 dept-equivalent regions (GADM L2)
- 119.7 km²23.6% of basin
- 70.4 km²13.9% of basin
- 68.3 km²13.5% of basin
- Pamplona54.6 km²10.8% of basin
- 35.5 km²7.0% of basin
- San Fernando34.8 km²6.9% of basin
- 34.2 km²6.7% of basin
- 32.4 km²6.4% of basin
1 intersecting protected areas
Mt. Isarog Natural Park
IUCN IINatural Park
12.68 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
256 distinct species · 914 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Bicol River : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 41 interactions GloBI sur 3 types (connectance 7.3%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
26,7°C
Annual rain
2 502mm
Moisture idx (CMI)
0,41
Runoff
1 966mm/an
PET
1 484mm
AET
1 367mm
Mean slope
1,9°
Water table
51cm
Forest
6%
Crops
68%
Urban
57%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)