HydroBASINS lev08 watershed · #2080578300
Bassin du Gave de Pau
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 2 administrative regions : Landes, Pyrénées-Atlantiques
Sub-basin area
478,8km²
Upstream area
2 740,7km²
Discharge
60,55m³/s
Mean elev.
124m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin du Gave de Pau1181 km²
- Bassin de la Baïse169 km²
2 dept-equivalent regions (GADM L2)
- 413.8 km²86.3% of basin
- 65.9 km²13.7% of basin
64 communes (GADM L5)Available for FRA, RWA
- Orthez43.08 km²92% commune
- Lucq-de-Béarn24.99 km²50% commune
- Monein24.24 km²30% commune
- Labatut21.47 km²100% commune
- Loubieng21.31 km²93% commune
- Lagor20.77 km²100% commune
- Mont18.43 km²100% commune
- Arthez-de-Béarn15.75 km²57% commune
- Lahontan14.76 km²98% commune
- Maslacq13.42 km²100% commune
- Baigts-de-Béarn13.40 km²100% commune
- Bellocq12.01 km²100% commune
- Sauvelade11.30 km²96% commune
- Lahourcade10.62 km²98% commune
- Bérenx10.61 km²79% commune
- Vielleségure10.43 km²73% commune
- Balansun10.40 km²98% commune
- Habas9.62 km²51% commune
- Puyoô9.40 km²100% commune
- Argagnon9.07 km²100% commune
- Ozenx-Montestrucq8.96 km²54% commune
- Castétis8.71 km²100% commune
- Cauneille8.65 km²58% commune
- Ramous8.12 km²100% commune
- Saint-Cricq-du-Gave7.94 km²94% commune
- Cardesse7.54 km²100% commune
- Pouillon6.67 km²13% commune
- Lanneplaà6.61 km²93% commune
- Castetner6.56 km²100% commune
- Laà-Mondrans6.56 km²100% commune
- Ossages6.41 km²45% commune
- Sallespisse6.36 km²42% commune
- Saint-Boès5.82 km²60% commune
- Urdès5.63 km²100% commune
- Lacq5.63 km²33% commune
- Salles-Mongiscard5.62 km²93% commune
- Casteide-Cami4.26 km²64% commune
- Biron3.88 km²100% commune
- Mourenx3.50 km²58% commune
- Sarpourenx3.31 km²100% commune
- Cescau3.26 km²41% commune
- Serres-Sainte-Marie3.11 km²32% commune
- Ledeuix2.95 km²21% commune
- Misson2.78 km²19% commune
- Sorde-l'Abbaye2.41 km²15% commune
- Mesplède2.28 km²19% commune
- Ogenne-Camptort2.00 km²17% commune
- Salies-de-Béarn1.88 km²4% commune
- Saint-Girons-en-Béarn1.71 km²33% commune
- Oloron-Sainte-Marie1.44 km²2% commune
- Abidos1.12 km²38% commune
- Os-Marsillon1.05 km²19% commune
- Bougarber0.40 km²4% commune
- Noguères0.33 km²16% commune
- Doazon0.25 km²4% commune
- Bugnein0.22 km²2% commune
- Castillon (Canton d'Arthez-de-Bé0.18 km²3% commune
- L'Hôpital-d'Orion0.13 km²2% commune
- Denguin0.11 km²1% commune
- Sault-de-Navailles0.11 km²0% commune
- Castetbon0.07 km²0% commune
- Carresse-Cassaber0.05 km²0% commune
- Audaux0.04 km²1% commune
- Pardies0.02 km²0% commune
10 intersecting protected areas
Château d'Orthez et bords du gave
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
38.69 km² overlap
Gave de Pau
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
14.52 km² overlap
Vallon du Clamondé
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.66 km² overlap
vallon du clamonde
IUCN IVLand acquired by a regional conservatory of natural areas
0.66 km² overlap
graves du larus
IUCN IVLand acquired by a regional conservatory of natural areas
0.13 km² overlap
tourbiere et prairies denis
IUCN IVLand acquired by a regional conservatory of natural areas
0.12 km² overlap
landes d\'orthez
IUCN IVLand acquired by a regional conservatory of natural areas
0.07 km² overlap
Land acquired by a regional conservatory of natural areas
0.06 km² overlap
Le Gave d'Oloron (cours d'eau) et marais de Labastide-Villefranche
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.03 km² overlap
1 more protected areassorted by overlap area
bois de salies-de-bearn
IUCN IVLand acquired by a regional conservatory of natural areas
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 437 distinct species · 145 943 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 du Gave de Pau : 26 espèces reliées par 124 interactions GloBI sur 6 types (connectance 16.7%, filtre Serrano α=0.2). 13 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°
12,8°C
Annual rain
1 039mm
Moisture idx (CMI)
0,07
Runoff
803mm/an
PET
965mm
AET
733mm
Mean slope
4,3°
Water table
179cm
Forest
35%
Crops
36%
Urban
3%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)