HydroBASINS lev08 watershed · #2080665520
Bassin de Ribeira de Tera
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 10 administrative regions : Arraiolos, Avis, Borba, Coruche, Estremoz +5
Sub-basin area
1 307,5km²
Upstream area
3 448,4km²
Discharge
25,91m³/s
Mean elev.
211m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ribeira Grande1138 km²
- Bassin de Ribeira de Seda1003 km²
10 dept-equivalent regions (GADM L2)
- ArraiolosÉvora · Portugal338.4 km²25.9% of basin
- MoraÉvora · Portugal305.0 km²23.3% of basin
- 267.8 km²20.5% of basin
- AvisPortalegre · Portugal180.8 km²13.8% of basin
- SouselPortalegre · Portugal167.4 km²12.8% of basin
- 24.7 km²1.9% of basin
- Ponte de SôrPortalegre · Portugal8.7 km²0.7% of basin
- 7.5 km²0.6% of basin
2 moreFull L2 list
- Borba4.9 km² · 0.4%
- Redondo3.5 km² · 0.3%
1 intersecting protected areas
Cabeção
IUCN Not ReportedSite of Community Importance (Habitats Directive)
92.42 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 124 distinct species · 99 544 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 Ribeira de Tera : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 68 interactions GloBI sur 5 types (connectance 11.4%, filtre Serrano α=0.2). 8 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°
16,5°C
Annual rain
656mm
Moisture idx (CMI)
-0,43
Runoff
228mm/an
PET
1 144mm
AET
553mm
Mean slope
2,3°
Water table
218cm
Forest
26%
Crops
53%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)