HydroBASINS lev08 watershed · #2080608500
Bassin de el Sió
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 : Barcelona, Lleida
Sub-basin area
860,4km²
Upstream area
8 001,9km²
Discharge
58m³/s
Mean elev.
444m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Noguera Pallaresa419 km²
- Bassin de el Segre396 km²
2 dept-equivalent regions (GADM L2)
- 833.9 km²96.8% of basin
- 27.7 km²3.2% of basin
21 intersecting protected areas
Valls del Sió-Llobregós
IUCN Not ReportedSpecial Protection Area (Birds Directive)
159.34 km² overlap
Valls de Sió-Llobregós
IUCN VIProtection Plan
159.34 km² overlap
Valls del Sió-Llobregós
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
158.08 km² overlap
Plans de Sió
IUCN VIProtection Plan
52.64 km² overlap
Plans de Sió
IUCN Not ReportedSpecial Protection Area (Birds Directive)
52.64 km² overlap
Protection Plan
44.04 km² overlap
Secans de la Noguera
IUCN Not ReportedSpecial Protection Area (Birds Directive)
44.04 km² overlap
Secans de la Noguera
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
44.04 km² overlap
Protection Plan
30.75 km² overlap
12 more protected areassorted by overlap area
Aiguabarreig Segre-Noguera Pallaresa
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
30.75 km² overlap
Aiguabarreig Segre-Noguera Pallaresa
IUCN Not ReportedSpecial Protection Area (Birds Directive)
30.75 km² overlap
Bellmunt-Almenara
IUCN VIProtection Plan
23.84 km² overlap
Bellmunt-Almenara
IUCN Not ReportedSpecial Protection Area (Birds Directive)
23.84 km² overlap
Bellmunt-Almenara
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
22.32 km² overlap
Plans de Sió
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
13.57 km² overlap
Sant Llorenç de Montgai
IUCN IVNature Reserve (Wildlife)
4.68 km² overlap
Aiguabarreig Segre-Noguera Ribagorçana
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.47 km² overlap
Protection Plan
1.47 km² overlap
Serres del Montsec, Sant Mamet i Mitjana
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.01 km² overlap
Serres del Montsec, Sant Mamet i Mitjana
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.01 km² overlap
Serra del Montsec
IUCN VProtection Plan
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 596 distinct species · 131 073 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 el Sió : 27 espèces reliées par 88 interactions GloBI sur 4 types (connectance 14.0%, filtre Serrano α=0.2). 9 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°
13,4°C
Annual rain
591mm
Moisture idx (CMI)
-0,41
Runoff
115mm/an
PET
1 009mm
AET
503mm
Mean slope
4,3°
Water table
333cm
Forest
10%
Crops
76%
Urban
2%
Protected
36%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)