HydroBASINS lev08 watershed · #2080604610
Bassin de Riera de Madrona
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
321,6km²
Upstream area
3 332,1km²
Discharge
25,1m³/s
Mean elev.
769m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de el Segre946 km²
- Bassin de Riera de Canalda240 km²
17 intersecting protected areas
Protection Plan
34.81 km² overlap
Obagues de la riera de Madrona
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
34.81 km² overlap
Serra d'Aubenç i Roc de Cogul
IUCN Not ReportedSpecial Protection Area (Birds Directive)
18.90 km² overlap
Serra d'Aubenç i Roc de Cogul
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
18.90 km² overlap
Protection Plan
18.90 km² overlap
Serra de Boumort-Collegats
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.60 km² overlap
Serra de Boumort-Collegats
IUCN Not ReportedSpecial Protection Area (Birds Directive)
7.60 km² overlap
Serra de Boumort
IUCN VProtection Plan
5.23 km² overlap
Ribera Salada
IUCN VProtection Plan
4.53 km² overlap
8 more protected areassorted by overlap area
Ribera Salada
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.53 km² overlap
Serra Mitjana
IUCN VProtection Plan
3.72 km² overlap
Serres del Montsec, Sant Mamet i Mitjana
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.72 km² overlap
Serres del Montsec, Sant Mamet i Mitjana
IUCN Not ReportedSpecial Protection Area (Birds Directive)
3.72 km² overlap
Protection Plan
2.38 km² overlap
Protection Plan
0.23 km² overlap
Aiguabarreig Segre-Noguera Pallaresa
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.23 km² overlap
Aiguabarreig Segre-Noguera Pallaresa
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.23 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 698 distinct species · 14 588 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 Riera de Madrona : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 109 interactions GloBI sur 6 types (connectance 14.0%, 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°
11,4°C
Annual rain
753mm
Moisture idx (CMI)
-0,16
Runoff
182mm/an
PET
901mm
AET
618mm
Mean slope
11,5°
Water table
474cm
Forest
86%
Crops
10%
Urban
0%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)