HydroBASINS lev08 watershed · #5080028910
Bassin de Sorsogon 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 : Bulusan, Casiguran, Castilla, Juban, Legazpi City +2
Sub-basin area
412,5km²
Upstream area
412,5km²
Discharge
22,62m³/s
Mean elev.
122m
Administrative coverage
7 dept-equivalent regions (GADM L2)
- 146.2 km²35.6% of basin
- 131.2 km²31.9% of basin
- 62.0 km²15.1% of basin
- Pilar38.9 km²9.5% of basin
- 3.7 km²0.9% of basin
- 0.0 km²0.0% of basin
- 0.0 km²0.0% of basin
3 intersecting protected areas
Protected Seascape
25.87 km² overlap
Putiao River to Malbog River, Getumbro Pt. to Prieto Diaz, Panuntingan Pt. to Tagdon River, Sinagbatan Bay to Mantay Pt. Magrove Swamp Forest Reserve
IUCN Not AssignedMangrove Swamp Forest Reserve
2.51 km² overlap
Bulusan Volcano Natural Park
IUCN IINatural Park
2.22 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 002 distinct species · 10 015 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 26 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 Sorsogon River : 19 espèces reliées par 34 interactions GloBI sur 3 types (connectance 10.5%, filtre Serrano α=0.2). 7 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°
26,6°C
Annual rain
2 839mm
Moisture idx (CMI)
0,48
Runoff
1 813mm/an
PET
1 478mm
AET
1 429mm
Mean slope
4,9°
Water table
120cm
Forest
20%
Crops
51%
Urban
20%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)