HydroBASINS lev08 watershed · #2080017090
Bassin de Riu Gaià
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 3 administrative regions : Barcelona, Lleida, Tarragona
Sub-basin area
419,1km²
Upstream area
419,1km²
Discharge
0,95m³/s
Mean elev.
465m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- 398.6 km²95.0% of basin
- 20.9 km²5.0% of basin
- 0.2 km²0.0% of basin
12 intersecting protected areas
Protection Plan
105.68 km² overlap
Sistema Prelitoral Central
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
105.68 km² overlap
Sistema Prelitoral Central
IUCN Not ReportedSpecial Protection Area (Birds Directive)
105.68 km² overlap
Protection Plan
29.91 km² overlap
Riu Gaià
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
29.91 km² overlap
Riu Gaià
IUCN Not ReportedSpecial Protection Area (Birds Directive)
29.91 km² overlap
El Montmell-Marmellar
IUCN Not ReportedSpecial Protection Area (Birds Directive)
15.10 km² overlap
El Montmell-Marmellar
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
15.10 km² overlap
El Montmell-Marmellar
IUCN VProtection Plan
15.10 km² overlap
3 more protected areassorted by overlap area
Costes del Tarragonès
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.03 km² overlap
Desembocadura del Riu Gaià
IUCN IVNature Reserve (Wildlife)
0.03 km² overlap
Protection Plan
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 048 distinct species · 49 065 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 Riu Gaià : 27 espèces reliées par 106 interactions GloBI sur 6 types (connectance 13.6%, 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°
13,9°C
Annual rain
638mm
Moisture idx (CMI)
-0,29
Runoff
71mm/an
PET
900mm
AET
542mm
Mean slope
6,7°
Water table
443cm
Forest
30%
Crops
41%
Urban
2%
Protected
36%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)