HydroBASINS lev08 watershed · #5080030910
Bassin de Yawa 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 : Bacacay, Barcelona, Bulusan, Camalig, Casiguran +15
Sub-basin area
1 474,5km²
Upstream area
1 474,5km²
Discharge
24,4m³/s
Mean elev.
139m
Administrative coverage
20 dept-equivalent regions (GADM L2)
- 159.0 km²10.8% of basin
- 153.8 km²10.5% of basin
- 116.1 km²7.9% of basin
- 115.3 km²7.8% of basin
- 95.4 km²6.5% of basin
- 95.1 km²6.5% of basin
- 83.6 km²5.7% of basin
- 79.1 km²5.4% of basin
12 moreFull L2 list
- Matnog74.6 km² · 5.1%
- Santo Domingo60.9 km² · 4.1%
- Barcelona58.8 km² · 4.0%
- Santa Magdalena54.5 km² · 3.7%
- Tabaco City48.2 km² · 3.3%
- Prieto Diaz46.0 km² · 3.1%
- Malilipot45.3 km² · 3.1%
- Irosin17.9 km² · 1.2%
- Camalig16.8 km² · 1.1%
- Casiguran9.0 km² · 0.6%
- Malinao5.1 km² · 0.3%
- Castilla1.3 km² · 0.1%
5 intersecting protected areas
Mt. Mayon Natural Park
IUCN IINatural Park
33.83 km² overlap
Protected Seascape
13.50 km² overlap
Bulusan Volcano Natural Park
IUCN IINatural Park
13.26 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
10.52 km² overlap
Mangrove Swamp Forest Reserve
1.95 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 233 distinct species · 9 185 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Yawa River : 33 espèces reliées par 37 interactions GloBI sur 3 types (connectance 5.3%, filtre Serrano α=0.2). 5 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°
26,5°C
Annual rain
2 806mm
Moisture idx (CMI)
0,47
Runoff
1 917mm/an
PET
1 478mm
AET
1 418mm
Mean slope
6,5°
Water table
198cm
Forest
32%
Crops
44%
Urban
26%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)