HydroBASINS lev08 watershed · #5080027980
Bassin de Ibajay 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 30 administrative regions : Barbaza, Belison, Bugasong, Buruanga, Culasi +24
Sub-basin area
2 373,6km²
Upstream area
2 373,6km²
Discharge
11,89m³/s
Mean elev.
314m
Administrative coverage
30 dept-equivalent regions (GADM L2)
- 232.2 km²9.8% of basin
- 178.9 km²7.6% of basin
- 178.5 km²7.5% of basin
- 171.3 km²7.2% of basin
- Laua-An165.7 km²7.0% of basin
- Pandan153.4 km²6.5% of basin
- 134.3 km²5.7% of basin
- 132.4 km²5.6% of basin
22 moreFull L2 list
- Sebaste106.8 km² · 4.5%
- Tibiao96.0 km² · 4.1%
- Malinao94.4 km² · 4.0%
- Libertad92.4 km² · 3.9%
- Nabas83.4 km² · 3.5%
- Malay75.2 km² · 3.2%
- Buruanga74.0 km² · 3.1%
- Tangalan63.5 km² · 2.7%
- Makato63.1 km² · 2.7%
- Lambunao39.9 km² · 1.7%
- Belison28.7 km² · 1.2%
- San Jose28.5 km² · 1.2%
- Tapaz24.0 km² · 1.0%
- Numancia18.4 km² · 0.8%
- Lezo15.2 km² · 0.6%
- Jamindan12.8 km² · 0.5%
- Madalag6.7 km² · 0.3%
- San Remigio5.3 km² · 0.2%
- Sibalom2.4 km² · 0.1%
- San Jose1.7 km² · 0.1%
- Kalibo1.0 km² · 0.0%
- Libacao0.3 km² · 0.0%
5 intersecting protected areas
Natural Park
120.15 km² overlap
Dalanas River Watershed Forest Reserve
IUCN Not AssignedWatershed Forest Reserve
79.59 km² overlap
DENR Antique, BFAR Antique, Office of the Provincial Agriculture (OPA) Antique and Rare Inc.
IUCN Not ApplicableMarine Protected Area Network
28.45 km² overlap
Aklan River Watershed Forest Reserve
IUCN Not AssignedWatershed Forest Reserve
8.77 km² overlap
Jalaur River Watershed Forest Reserve
IUCN Not AssignedWatershed Forest Reserve
0.55 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
905 distinct species · 5 754 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 21 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 Ibajay River : 15 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 20 interactions GloBI sur 2 types (connectance 9.5%, filtre Serrano α=0.2). 6 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°
25,9°C
Annual rain
3 476mm
Moisture idx (CMI)
0,60
Runoff
2 166mm/an
PET
1 385mm
AET
1 272mm
Mean slope
13,3°
Water table
430cm
Forest
24%
Crops
26%
Urban
13%
Protected
10%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)