HydroBASINS lev08 watershed · #5080116020
Bassin de Rio Chico
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 31 administrative regions : Aliaga, Arayat, Bamban, Cabanatuan City, Cabiao +26
Sub-basin area
2 641,2km²
Upstream area
2 641,2km²
Discharge
125,76m³/s
Mean elev.
146m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
31 dept-equivalent regions (GADM L2)
- 283.6 km²10.8% of basin
- Concepcion234.4 km²8.9% of basin
- 164.1 km²6.2% of basin
- 160.8 km²6.1% of basin
- 142.5 km²5.4% of basin
- La Paz122.2 km²4.6% of basin
- 120.0 km²4.6% of basin
- 118.4 km²4.5% of basin
23 moreFull L2 list
- San Antonio116.5 km² · 4.4%
- Aliaga103.6 km² · 3.9%
- Talavera99.5 km² · 3.8%
- Muñoz City98.1 km² · 3.7%
- Tarlac City96.5 km² · 3.7%
- Zaragoza91.8 km² · 3.5%
- Magalang88.7 km² · 3.4%
- Llanera82.4 km² · 3.1%
- Quezon76.3 km² · 2.9%
- Santo Domingo75.5 km² · 2.9%
- Victoria70.4 km² · 2.7%
- Licab55.2 km² · 2.1%
- Guimba49.1 km² · 1.9%
- Jaen37.5 km² · 1.4%
- Umingan33.8 km² · 1.3%
- Pantabangan31.8 km² · 1.2%
- Santa Rosa20.8 km² · 0.8%
- Arayat17.1 km² · 0.6%
- Cabanatuan City16.5 km² · 0.6%
- Santa Fe12.0 km² · 0.5%
- Cabiao10.7 km² · 0.4%
- Talugtug2.3 km² · 0.1%
- General Mamerto Natividad0.2 km² · 0.0%
3 intersecting protected areas
Talavera Watershed Forest Reserve
IUCN Not AssignedWatershed Forest Reserve
249.57 km² overlap
Mt. Arayat National Park
IUCN Not AssignedNational Park
14.83 km² overlap
Pantabangan-Caranglan Watershed Reservation
IUCN Not AssignedWatershed Reservation
6.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 372 distinct species · 18 556 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 Rio Chico : 23 espèces reliées par 38 interactions GloBI sur 3 types (connectance 8.7%, filtre Serrano α=0.2). 7 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 121mm
Moisture idx (CMI)
0,22
Runoff
1 570mm/an
PET
1 601mm
AET
1 160mm
Mean slope
3,0°
Water table
95cm
Forest
5%
Crops
38%
Urban
33%
Protected
10%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)