HydroBASINS lev08 watershed · #2080018990
Bassin de Rio da Areia
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 8 administrative regions : Alcobaça, Batalha, Caldas da Rainha, Leiria, Marinha Grande +3
Sub-basin area
417,5km²
Upstream area
417,7km²
Discharge
4,37m³/s
Mean elev.
140m
Administrative coverage
8 dept-equivalent regions (GADM L2)
- AlcobaçaLeiria · Portugal280.4 km²67.1% of basin
- Porto de MósLeiria · Portugal61.4 km²14.7% of basin
- NazaréLeiria · Portugal57.5 km²13.8% of basin
- LeiriaLeiria · Portugal17.5 km²4.2% of basin
- Rio MaiorSantarém · Portugal0.8 km²0.2% of basin
- BatalhaLeiria · Portugal0.1 km²0.0% of basin
- Marinha GrandeLeiria · Portugal0.1 km²0.0% of basin
- Caldas da RainhaLeiria · Portugal0.1 km²0.0% of basin
3 intersecting protected areas
Serras d'Aire e Candeeiros
IUCN Not ReportedSite of Community Importance (Habitats Directive)
62.52 km² overlap
Nature Park
62.44 km² overlap
Aveiro/ Nazaré
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 716 distinct species · 36 716 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 42 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 Rio da Areia : 29 espèces reliées par 106 interactions GloBI sur 5 types (connectance 11.7%, filtre Serrano α=0.2). 14 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°
15,2°C
Annual rain
783mm
Moisture idx (CMI)
-0,13
Runoff
389mm/an
PET
901mm
AET
588mm
Mean slope
4,3°
Water table
252cm
Forest
79%
Crops
10%
Urban
5%
Protected
15%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)