HydroBASINS lev08 watershed · #2080020320
Bassin · #2080020320
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 1 administrative regions : Pyrénées-Atlantiques
Sub-basin area
13,6km²
Upstream area
13,6km²
Discharge
0,43m³/s
Mean elev.
31m
Administrative coverage
1 dept-equivalent regions (GADM L2)
- 11.6 km²85.6% of basin
2 communes (GADM L5)Available for FRA, RWA
4 intersecting protected areas
Falaises de Saint-Jean-de-Luz à Biarritz
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.93 km² overlap
Rochers de Biarritz : le Bouccalot et la Roche ronde
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.65 km² overlap
Lac marion
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
0.08 km² overlap
L'Adour
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 611 distinct species · 36 865 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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 · #2080020320 : 34 espèces reliées par 94 interactions GloBI sur 5 types (connectance 11.5%, 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°
13,8°C
Annual rain
1 353mm
Moisture idx (CMI)
0,36
Runoff
985mm/an
PET
864mm
AET
771mm
Mean slope
2,3°
Water table
148cm
Forest
0%
Crops
9%
Urban
95%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)