HydroBASINS lev08 watershed · #2080658880
Bassin de Rio Almonda
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 : Alpiarça, Chamusca, Constância, Entroncamento, Golegã +5
Sub-basin area
545,7km²
Upstream area
67 430,8km²
Discharge
389,73m³/s
Mean elev.
86m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Rio Tejo1141 km²
- Bassin de Ribeiro da Gata26 km²
10 dept-equivalent regions (GADM L2)
- Torres NovasSantarém · Portugal192.7 km²35.3% of basin
- ChamuscaSantarém · Portugal164.1 km²30.0% of basin
- GolegãSantarém · Portugal71.8 km²13.1% of basin
- Vila Nova da BarquinhaSantarém · Portugal39.4 km²7.2% of basin
- 30.4 km²5.6% of basin
- ConstânciaSantarém · Portugal19.5 km²3.6% of basin
- EntroncamentoSantarém · Portugal13.7 km²2.5% of basin
- 9.4 km²1.7% of basin
2 moreFull L2 list
- Alpiarça3.9 km² · 0.7%
- Ourém1.3 km² · 0.2%
8 intersecting protected areas
Paúl do Boquilobo
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
12.18 km² overlap
Nature Park
8.58 km² overlap
Paul do Boquilobo
IUCN IVNature Reserve
8.18 km² overlap
Serras d'Aire e Candeeiros
IUCN Not ReportedSite of Community Importance (Habitats Directive)
7.99 km² overlap
Paúl do Boquilobo
IUCN IVWetland of International Importance (Ramsar Site)
6.26 km² overlap
Paul do Boquilobo
IUCN Not ReportedSpecial Protection Area (Birds Directive)
4.33 km² overlap
Mira Minde Polje and related Springs
IUCN Not ReportedWetland of International Importance (Ramsar Site)
0.88 km² overlap
Natural Monument
0.54 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 763 distinct species · 156 796 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 Rio Almonda : 30 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 66 interactions GloBI sur 2 types (connectance 11.1%, filtre Serrano α=0.2). 5 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°
16,4°C
Annual rain
753mm
Moisture idx (CMI)
-0,29
Runoff
307mm/an
PET
1 059mm
AET
605mm
Mean slope
2,9°
Water table
178cm
Forest
36%
Crops
38%
Urban
6%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)