HydroBASINS lev08 watershed · #2080020120
Bassin de Ibaizabal ibaia
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 4 administrative regions : Burgos, Guipúzcoa, Vizcaya, Álava
Sub-basin area
1 791,4km²
Upstream area
1 791,4km²
Discharge
32,99m³/s
Mean elev.
385m
Administrative coverage
4 dept-equivalent regions (GADM L2)
- 1047.5 km²58.4% of basin
- 451.0 km²25.1% of basin
- 294.7 km²16.4% of basin
- 1.3 km²0.1% of basin
21 intersecting protected areas
Gorbeia
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
111.55 km² overlap
Gorbeia
IUCN VNatural Park
106.22 km² overlap
Bosques del Valle de Mena
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
63.35 km² overlap
Urkiola
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
47.45 km² overlap
Urkiola
IUCN VNatural Park
46.83 km² overlap
Arkamu-Gibillo-Arrastaria
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
37.52 km² overlap
Gorobel mendilerroa / Sierra Sálvada
IUCN Not ReportedSpecial Protection Area (Birds Directive)
31.29 km² overlap
Monte Santiago
IUCN Not ReportedSpecial Protection Area (Birds Directive)
12.82 km² overlap
Monte Santiago
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
12.82 km² overlap
12 more protected areassorted by overlap area
Itxina
IUCN IIINatural Monument
5.69 km² overlap
Monte Santiago
IUCN IIINatural Monument
5.50 km² overlap
Protected Landscape
2.66 km² overlap
Ordunte
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.10 km² overlap
Urdaibai
IUCN IVBiosphere Reserve
0.91 km² overlap
Urkabustaizko irla-hariztiak / Robledales isla de Urkabustaiz
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.12 km² overlap
Urdaibaiko ibai sarea / Red fluvial de Urdaibai
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.08 km² overlap
Roble de Altube
IUCN IIINatural Monument
0.00 km² overlap
Tejo de Aginarte
IUCN IIINatural Monument
0.00 km² overlap
Encina de Artziniega
IUCN IIINatural Monument
0.00 km² overlap
Tejo de Aginalde
IUCN IIINatural Monument
0.00 km² overlap
Encina de Garai
IUCN IIINatural Monument
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
6 839 distinct species · 275 941 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Ibaizabal ibaia : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 103 interactions GloBI sur 4 types (connectance 14.7%, filtre Serrano α=0.2). 10 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°
12,5°C
Annual rain
1 074mm
Moisture idx (CMI)
0,25
Runoff
716mm/an
PET
806mm
AET
671mm
Mean slope
12,9°
Water table
418cm
Forest
90%
Crops
3%
Urban
14%
Protected
10%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)