HydroBASINS lev08 watershed · #5080030090
Bassin de Bulu 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 14 administrative regions : Adams, Bacarra, Bangui, Burgos, Calanasan +9
Sub-basin area
1 375km²
Upstream area
1 375km²
Discharge
18,21m³/s
Mean elev.
232m
Administrative coverage
14 dept-equivalent regions (GADM L2)
- 194.1 km²14.2% of basin
- 163.7 km²11.9% of basin
- 155.8 km²11.4% of basin
- 153.1 km²11.2% of basin
- 144.3 km²10.5% of basin
- Adams113.3 km²8.3% of basin
- 91.4 km²6.7% of basin
- 86.2 km²6.3% of basin
5 intersecting protected areas
Natural Park
39.02 km² overlap
Adams Wildlife Critical Habitat
IUCN Not ApplicableCritical Habitat
32.47 km² overlap
Ilocos Norte Metro Watershed Forest Reserve
IUCN Not AssignedWatershed Forest Reserve
22.46 km² overlap
Tanap Watershed Forest Reserve
IUCN Not AssignedWatershed Forest Reserve
3.03 km² overlap
Sta. Praxedes-Claveria Marine Protected Area (SPCMPAN)
IUCN Not ApplicableMarine Protected Area Network
2.12 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
996 distinct species · 5 419 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Bulu River : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 25 interactions GloBI sur 3 types (connectance 5.4%, filtre Serrano α=0.2). 3 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°
25,6°C
Annual rain
2 632mm
Moisture idx (CMI)
0,43
Runoff
2 029mm/an
PET
1 446mm
AET
1 273mm
Mean slope
9,9°
Water table
336cm
Forest
52%
Crops
11%
Urban
6%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)