HydroBASINS lev08 watershed · #2080589630
Bassin de Río Ulla
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 2 administrative regions : A Coruña, Pontevedra
Sub-basin area
271,9km²
Upstream area
1 436,3km²
Discharge
41,1m³/s
Mean elev.
292m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Río Iso175 km²
- Bassin de Río Ulla10 km²
2 dept-equivalent regions (GADM L2)
- 218.8 km²80.3% of basin
- 53.6 km²19.7% of basin
2 intersecting protected areas
Sistema fluvial Ulla-Deza
IUCN Not AssignedNatura 2000
0.62 km² overlap
Sistema fluvial Ulla - Deza
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.62 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 042 distinct species · 7 187 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 44 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 Río Ulla : 37 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 103 interactions GloBI sur 6 types (connectance 10.9%, filtre Serrano α=0.2). 7 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°
13,5°C
Annual rain
1 295mm
Moisture idx (CMI)
0,34
Runoff
1 027mm/an
PET
856mm
AET
685mm
Mean slope
6,8°
Water table
315cm
Forest
96%
Crops
3%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)