HydroBASINS lev08 watershed · #5080030230
Bassin de Lasam 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 12 administrative regions : Alcala, Allacapan, Aparri, Baggao, Camalaniugan +7
Sub-basin area
1 285,9km²
Upstream area
27 711,9km²
Discharge
1 228,49m³/s
Mean elev.
148m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Chico River256 km²
- Bassin de Cagayan River76 km²
12 dept-equivalent regions (GADM L2)
- 406.6 km²31.7% of basin
- 267.4 km²20.9% of basin
- 226.7 km²17.7% of basin
- 213.0 km²16.6% of basin
- 41.2 km²3.2% of basin
- 26.2 km²2.0% of basin
- 23.2 km²1.8% of basin
- 18.6 km²1.4% of basin
1 intersecting protected areas
Protected Landscape
38.18 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
159 distinct species · 321 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 Lasam River : 25 espèces reliées par 24 interactions GloBI sur 3 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°
26,2°C
Annual rain
1 992mm
Moisture idx (CMI)
0,23
Runoff
1 152mm/an
PET
1 467mm
AET
1 125mm
Mean slope
6,2°
Water table
249cm
Forest
25%
Crops
19%
Urban
6%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)