HydroBASINS lev08 watershed · #5080026640
Bassin de Pambujan 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 20 administrative regions : Allen, Biri, Bobon, Calbayog City, Catarman +15
Sub-basin area
3 210,4km²
Upstream area
3 210,4km²
Discharge
6,31m³/s
Mean elev.
108m
Administrative coverage
20 dept-equivalent regions (GADM L2)
- 860.3 km²26.9% of basin
- 322.7 km²10.1% of basin
- Catarman255.8 km²8.0% of basin
- 210.8 km²6.6% of basin
- 198.6 km²6.2% of basin
- Lope de Vega186.6 km²5.8% of basin
- San Isidro177.9 km²5.6% of basin
- 166.5 km²5.2% of basin
4 intersecting protected areas
Samar Island Natural Park
IUCN IINatural Park
216.10 km² overlap
Protected Landscape and Seascape
159.87 km² overlap
Protected Landscape
50.69 km² overlap
Marine Protected Area Network within Biri-Larosa Protected Landscape and Seascape
IUCN Not ApplicableMarine Protected Area Network
33.59 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
582 distinct species · 1 080 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Pambujan River : 29 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 31 interactions GloBI sur 2 types (connectance 5.9%, filtre Serrano α=0.2). 4 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°
26,3°C
Annual rain
2 955mm
Moisture idx (CMI)
0,50
Runoff
1 976mm/an
PET
1 484mm
AET
1 452mm
Mean slope
6,8°
Water table
214cm
Forest
38%
Crops
35%
Urban
6%
Protected
18%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)