HydroBASINS lev08 watershed · #2080601050
Bassin de Río Ésera
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 across 2 countries : Haute-Garonne, Hautes-Pyrénées, Huesca, Lleida
Sub-basin area
1 540,5km²
Upstream area
1 540,5km²
Discharge
19,56m³/s
Mean elev.
1 298m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 1539.9 km²99.8% of basin
- 2.0 km²0.1% of basin
- 0.7 km²0.0% of basin
- 0.4 km²0.0% of basin
4 communes (GADM L5)Available for FRA, RWA
- Bagnères-de-Luchon0.85 km²2% commune
- Castillon-de-Larboust0.83 km²3% commune
- Loudenvielle0.44 km²1% commune
- Oô0.35 km²1% commune
28 intersecting protected areas
Posets - Maladeta
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
223.23 km² overlap
Posets - Maladeta
IUCN Not ReportedSpecial Protection Area (Birds Directive)
223.23 km² overlap
Posets-Maladeta
IUCN VNatural Park
220.84 km² overlap
El Turbón y Sierra de Sís
IUCN Not ReportedSpecial Protection Area (Birds Directive)
165.70 km² overlap
Cotiella - Sierra Ferrera
IUCN Not ReportedSpecial Protection Area (Birds Directive)
104.77 km² overlap
Sierra de Chía - Congosto de Seira
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
86.50 km² overlap
Sierra de Esdolomada y Morrones de Güel
IUCN Not ReportedSpecial Protection Area (Birds Directive)
54.07 km² overlap
Sierra de Esdolomada y Morrones de Güel
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
54.07 km² overlap
Macizo de Cotiella
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
30.02 km² overlap
19 more protected areassorted by overlap area
El Turbón
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
28.18 km² overlap
Sierra del Castillo de Laguarres
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
19.22 km² overlap
Congosto de Olvena
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
18.76 km² overlap
Río Isábena
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
18.19 km² overlap
Río Ésera
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
17.56 km² overlap
Natural Monument
13.37 km² overlap
Sierra Ferrera
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
11.00 km² overlap
Garganta de Obarra
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.35 km² overlap
Natural Monument
2.88 km² overlap
Congosto de Ventamillo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.47 km² overlap
Vallées du Lis, de la Pique et d'Oô
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.49 km² overlap
Haute vallée de la Pique
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.49 km² overlap
Natural Monument
1.04 km² overlap
Era Artiga de Lin-Eth Portilhon
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.73 km² overlap
Era Artiga de Lin-Eth Portilhon
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.73 km² overlap
Artiga de Lin, Era
IUCN VProtection Plan
0.71 km² overlap
Chistau
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.49 km² overlap
Haut-Louron : Aygues Tortes, Caillauas, Gourgs Blancs, Gorges de Clarabide, pics des Pichadères et d'Estiouère, montagne de Tramadits
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.33 km² overlap
Haute vallée d'Oô
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.21 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
6 676 distinct species · 195 123 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 Río Ésera : 30 espèces + 7 bulles famille, 62 interactions GloBI documentées sur 4 types (connectance 9.3%, filtre Serrano α=0.2). Les 7 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°
7,6°C
Annual rain
978mm
Moisture idx (CMI)
0,13
Runoff
384mm/an
PET
795mm
AET
628mm
Mean slope
17,0°
Water table
590cm
Forest
67%
Crops
11%
Urban
0%
Protected
14%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)