HydroBASINS lev08 watershed · #2080576000
Bassin du Lées
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 : Gers, Hautes-Pyrénées, Landes, Pyrénées-Atlantiques
Sub-basin area
447,7km²
Upstream area
447,9km²
Discharge
8,39m³/s
Mean elev.
226m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 376.7 km²84.0% of basin
- 52.6 km²11.7% of basin
- 9.7 km²2.2% of basin
- 9.6 km²2.1% of basin
82 communes (GADM L5)Available for FRA, RWA
- Garlin15.76 km²83% commune
- Coslédaà-Lube-Boast14.14 km²100% commune
- Taron-Sadirac-Viellenave13.63 km²100% commune
- Projan11.93 km²100% commune
- Simacourbe11.63 km²100% commune
- Séméacq-Blachon11.21 km²100% commune
- Lannux10.87 km²85% commune
- Maspie-Lalonquère-Juillacq10.63 km²100% commune
- Anoye9.97 km²100% commune
- Lannecaube8.68 km²100% commune
- Sévignacq8.65 km²49% commune
- Lembeye8.64 km²100% commune
- Mascaraàs-Haron8.60 km²100% commune
- Peyrelongue-Abos8.59 km²100% commune
- Monassut-Audiracq8.54 km²88% commune
- Portet8.19 km²100% commune
- Lalongue8.13 km²100% commune
- Arricau-Bordes8.09 km²100% commune
- Lombia8.00 km²100% commune
- Sedze-Maubecq7.83 km²100% commune
- Castetpugon7.69 km²100% commune
- Corbère-Abères7.22 km²100% commune
- Lespielle7.05 km²100% commune
- Lespourcy7.04 km²100% commune
- Vialer7.04 km²100% commune
- Ségos7.03 km²79% commune
- Lussagnet-Lusson6.78 km²100% commune
- Momy6.48 km²100% commune
- Gerderest6.36 km²100% commune
- Baleix6.22 km²100% commune
- Aurions-Idernes6.20 km²100% commune
- Aurensan5.99 km²92% commune
- Abère5.92 km²100% commune
- Verlus5.83 km²100% commune
- Moncla5.67 km²100% commune
- Baliracq-Maumusson5.60 km²100% commune
- Viella5.55 km²25% commune
- Burosse-Mendousse5.54 km²100% commune
- Mont-Disse5.44 km²100% commune
- Arrosès5.35 km²54% commune
- Cadillon5.29 km²100% commune
- Diusse5.19 km²100% commune
- Samsons-Lion5.05 km²100% commune
- Bassillon-Vauzé4.90 km²100% commune
- Tadousse-Ussau4.72 km²100% commune
- Castillon (Canton de Lembeye)4.64 km²100% commune
- Conchez-de-Béarn4.54 km²100% commune
- Luc-Armau4.48 km²80% commune
- Saint-Agnet4.27 km²56% commune
- Saint-Jean-Poudge4.15 km²100% commune
- Escurès4.09 km²100% commune
- Gayon3.88 km²100% commune
- Mouhous3.68 km²100% commune
- Bernède3.65 km²46% commune
- Moncaup3.57 km²31% commune
- Saubole3.50 km²67% commune
- Lucarré3.23 km²100% commune
- Carrère3.09 km²50% commune
- Saint-Laurent-Bretagne2.95 km²27% commune
- Vidouze2.93 km²18% commune
- Aubous2.85 km²80% commune
- Sarron2.83 km²70% commune
- Gardères2.70 km²18% commune
- Séron2.61 km²28% commune
- Aire-sur-l'Adour2.60 km²4% commune
- Claracq2.50 km²25% commune
- Urost2.39 km²100% commune
- Ribarrouy2.23 km²98% commune
- Bédeille2.12 km²56% commune
- Lasserre2.02 km²50% commune
- Bentayou-Sérée1.87 km²22% commune
- Barcelonne-du-Gers1.74 km²9% commune
- Sedzère1.72 km²14% commune
- Eslourenties-Daban1.71 km²33% commune
- Crouseilles1.67 km²21% commune
- Escoubès1.52 km²24% commune
- Villenave-près-Béarn1.32 km²46% commune
- Aydie1.28 km²16% commune
- Monpezat0.96 km²29% commune
- Maure0.30 km²9% commune
- Arrien0.06 km²1% commune
- Labarthète0.05 km²1% commune
4 intersecting protected areas
Coteaux de Castetpugon, de Cadillon et de Lembeye
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.20 km² overlap
Vallée de l'Adour
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.23 km² overlap
coteau de garlin
IUCN IVLand acquired by a regional conservatory of natural areas
0.17 km² overlap
coteau de lembeye
IUCN IVLand acquired by a regional conservatory of natural areas
0.13 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 664 distinct species · 48 519 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 du Lées : 31 espèces + 6 bulles famille, 106 interactions GloBI documentées sur 5 types (connectance 15.9%, filtre Serrano α=0.2). Les 6 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
12,1°C
Annual rain
892mm
Moisture idx (CMI)
-0,08
Runoff
581mm/an
PET
970mm
AET
702mm
Mean slope
4,3°
Water table
257cm
Forest
13%
Crops
51%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)