HydroBASINS lev08 watershed · #5080030580
Bassin de Umiray 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 6 administrative regions : Dingalan, Doña Remedios Trinidad, General Nakar, General Tinio, Norzagaray +1
Sub-basin area
596,2km²
Upstream area
596,2km²
Discharge
27,14m³/s
Mean elev.
442m
Administrative coverage
6 dept-equivalent regions (GADM L2)
- 374.7 km²63.1% of basin
- 132.5 km²22.3% of basin
- Doña Remedios TrinidadBulacan · Philippines49.9 km²8.4% of basin
- 22.1 km²3.7% of basin
- NorzagarayBulacan · Philippines10.6 km²1.8% of basin
- 4.1 km²0.7% of basin
3 intersecting protected areas
Wildlife Sanctuary
18.17 km² overlap
Angat (Metro Water District) Watershed Forest Reserve
IUCN Not AssignedWatershed Forest Reserve
9.63 km² overlap
Doña Remedios Trinidad-General Tinio Watershed Forest Reserve
IUCN Not AssignedWatershed Forest Reserve
7.13 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
62 distinct species · 77 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 3 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 Umiray River : 3 espèces reliées par 2 interactions GloBI sur 2 types (connectance 66.7%, filtre Serrano α=0.2).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
24,7°C
Annual rain
3 076mm
Moisture idx (CMI)
0,52
Runoff
1 727mm/an
PET
1 461mm
AET
1 378mm
Mean slope
17,2°
Water table
518cm
Forest
56%
Crops
18%
Urban
0%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)