HydroBASINS lev08 watershed · #5080027800
Bassin de Himogaan 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 7 administrative regions : Cadiz City, Calatrava, Escalante City, Sagay City, Salvador Benedicto +2
Sub-basin area
450,8km²
Upstream area
450,9km²
Discharge
20,48m³/s
Mean elev.
356m
Administrative coverage
7 dept-equivalent regions (GADM L2)
- 167.0 km²37.2% of basin
- 145.7 km²32.4% of basin
- 101.8 km²22.7% of basin
- 24.1 km²5.4% of basin
- 6.5 km²1.4% of basin
- 2.6 km²0.6% of basin
- 0.5 km²0.1% of basin
2 intersecting protected areas
Northern Negros Natural Park
IUCN IINatural Park
177.87 km² overlap
Sagay Marine Reserve
IUCN IbResource Reserve
0.52 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
188 distinct species · 323 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 25 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 Himogaan River : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 17 interactions GloBI sur 4 types (connectance 5.7%, filtre Serrano α=0.2). 2 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 109mm
Moisture idx (CMI)
0,28
Runoff
1 276mm/an
PET
1 516mm
AET
1 357mm
Mean slope
6,7°
Water table
200cm
Forest
7%
Crops
38%
Urban
8%
Protected
40%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)