HydroBASINS lev08 watershed · #2080020280

Bassin de Baztan 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 3 administrative regions across 2 countries : Guipúzcoa, Navarra, Pyrénées-Atlantiques

Pfafstetter: 23190998

Sub-basin area

718,3km²

Upstream area

718,4km²

Discharge

24,39m³/s

Mean elev.

467m

Administrative coverage

3 dept-equivalent regions (GADM L2)

Navarra
Comunidad Foral de Navarra · Spain
674.9 km²
93.8% of basin
Guipúzcoa
País Vasco · Spain
28.1 km²
3.9% of basin
Pyrénées-Atlantiques
Nouvelle-Aquitaine · France
16.6 km²
2.3% of basin

7 communes (GADM L5)Available for FRA, RWA

Biriatou
Pyrénées-Atlantiques
10.33 km²92% commune
Urrugne
Pyrénées-Atlantiques
3.15 km²6% commune
Hendaye
Pyrénées-Atlantiques
1.66 km²19% commune
Sare
Pyrénées-Atlantiques
1.01 km²2% commune
Aldudes
Pyrénées-Atlantiques
0.46 km²2% commune
Saint-Étienne-de-Baïgorry
Pyrénées-Atlantiques
0.00 km²0% commune
Banca
Pyrénées-Atlantiques
0.00 km²0% commune

28 intersecting protected areas

Belate
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
148.07 km² overlap
Señorío de Bertiz
IUCN II
Natural Park
20.53 km² overlap
Señorío de Bértiz
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
20.53 km² overlap
Aritzakun-Urritzate-Gorramendi
IUCN Not Reported
Special Protection Area (Birds Directive)
15.03 km² overlap
Aritzakun-Urritzate-Gorramendi
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
15.03 km² overlap
Aiako Harria
IUCN V
Natural Park
12.17 km² overlap
Aiako harria
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
12.13 km² overlap
Monte Alduide
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
9.03 km² overlap
Massif de la Rhune et de Choldocogagna
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
7.91 km² overlap

19 more protected areassorted by overlap area

Río Bidasoa
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
3.87 km² overlap
Embalses de Leurza
IUCN VI
Natural Area (recreational)
3.66 km² overlap
Col de Lizarrieta
IUCN Not Reported
Special Protection Area (Birds Directive)
0.94 km² overlap
Txingudi-Bidasoa
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
0.77 km² overlap
Río Baztan y Regata Artesiaga
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
0.76 km² overlap
Artikutza
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
0.73 km² overlap
Montagnes des Aldudes
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
0.31 km² overlap
Vallée de la Nive des Aldudes, Col de Lindux
IUCN Not Reported
Special Protection Area (Birds Directive)
0.31 km² overlap
Txingudi
IUCN Not Reported
Special Protection Area (Birds Directive)
0.30 km² overlap
Regata de Orabidea y turbera de Arxuri
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
0.09 km² overlap
Estuaire de la Bidassoa et baie de Fontarabie
IUCN Not Reported
Special Protection Area (Birds Directive)
0.05 km² overlap
San Juan Xar
IUCN IV
Nature Reserve
0.03 km² overlap
Labiaga
IUCN IV
Nature Reserve
0.01 km² overlap
Baie de Chingoudy
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
0.01 km² overlap
La Nivelle (estuaire, barthes et cours d'eau)
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
0.00 km² overlap
Sequoya del Embalse de Domiko
IUCN III
Natural Monument
0.00 km² overlap
Acebo de Bera
IUCN III
Natural Monument
0.00 km² overlap
Cedro de Bértiz
IUCN III
Natural Monument
0.00 km² overlap
Tejo de Etxalar
IUCN III
Natural Monument
0.00 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

5 731 distinct species · 497 741 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).

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Baztan ibaia : 21 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 60 interactions GloBI sur 2 types (connectance 14.8%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.148

Patrimoniales

Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

11,8°C

Annual rain

1 272mm

Moisture idx (CMI)

0,30

Runoff

1 022mm/an

PET

893mm

AET

758mm

Mean slope

17,0°

Water table

528cm

Forest

85%

Crops

Urban

Protected

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)