HydroBASINS lev08 watershed · #2080602830
Bassin de Río Gállego
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 : Huesca, Zaragoza
Sub-basin area
1 017,7km²
Upstream area
2 166,2km²
Discharge
28,96m³/s
Mean elev.
768m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Río Gállego889 km²
- Bassin de Río Guarga261 km²
2 dept-equivalent regions (GADM L2)
- 838.0 km²82.2% of basin
- 181.3 km²17.8% of basin
12 intersecting protected areas
Sierras de Santo Domingo y Caballera y río Onsella
IUCN Not ReportedSpecial Protection Area (Birds Directive)
214.27 km² overlap
Sierras de Santo Domingo y Caballera
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
179.14 km² overlap
Sierras de San Juan de la Peña y Peña Oroel
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
38.70 km² overlap
Protected Landscape
32.45 km² overlap
Sierra de Santo Domingo
IUCN VProtected Landscape
17.32 km² overlap
SanJuan de la Peña y Peña Oroel
IUCN Not ReportedSpecial Protection Area (Birds Directive)
16.25 km² overlap
La Sotonera
IUCN Not ReportedSpecial Protection Area (Birds Directive)
11.75 km² overlap
Monte peiró - Arguís
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
10.86 km² overlap
Sierra y Cañones de Guara
IUCN Not ReportedSpecial Protection Area (Birds Directive)
4.21 km² overlap
3 more protected areassorted by overlap area
San Juan de la Peña
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.13 km² overlap
Natural Monument
1.88 km² overlap
La Guarguera
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.08 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 229 distinct species · 58 184 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 de Río Gállego : 26 espèces reliées par 79 interactions GloBI sur 4 types (connectance 11.2%, filtre Serrano α=0.2). 12 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°
10,2°C
Annual rain
676mm
Moisture idx (CMI)
-0,25
Runoff
366mm/an
PET
918mm
AET
566mm
Mean slope
10,9°
Water table
408cm
Forest
72%
Crops
14%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)