HydroBASINS lev08 watershed · #2080604800
Bassin de el Segre
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 1 administrative regions : Lleida
Sub-basin area
396,1km²
Upstream area
4 335,4km²
Discharge
29,19m³/s
Mean elev.
606m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de el Llobregós607 km²
- Bassin de Riera de Madrona322 km²
9 intersecting protected areas
Serra del Montsec
IUCN VProtection Plan
66.12 km² overlap
Serres del Montsec, Sant Mamet i Mitjana
IUCN Not ReportedSpecial Protection Area (Birds Directive)
66.12 km² overlap
Serres del Montsec, Sant Mamet i Mitjana
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
66.12 km² overlap
Protection Plan
29.45 km² overlap
Aiguabarreig Segre-Noguera Pallaresa
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
29.45 km² overlap
Aiguabarreig Segre-Noguera Pallaresa
IUCN Not ReportedSpecial Protection Area (Birds Directive)
29.45 km² overlap
Valls del Sió-Llobregós
IUCN Not ReportedSpecial Protection Area (Birds Directive)
7.80 km² overlap
Valls de Sió-Llobregós
IUCN VIProtection Plan
7.80 km² overlap
Valls del Sió-Llobregós
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.80 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 444 distinct species · 89 586 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Segre : 22 espèces reliées par 82 interactions GloBI sur 5 types (connectance 15.5%, filtre Serrano α=0.2). 11 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°
12,3°C
Annual rain
674mm
Moisture idx (CMI)
-0,29
Runoff
153mm/an
PET
961mm
AET
567mm
Mean slope
10,0°
Water table
458cm
Forest
51%
Crops
32%
Urban
0%
Protected
26%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)