HydroBASINS lev08 watershed · #2080606830
Bassin de Riera Gavarresa
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 : Barcelona, Girona
Sub-basin area
459,4km²
Upstream area
459,6km²
Discharge
4,36m³/s
Mean elev.
608m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 459.9 km²100.0% of basin
- 0.2 km²0.0% of basin
4 intersecting protected areas
Protection Plan
42.73 km² overlap
Riera de Merlès
IUCN VProtection Plan
13.87 km² overlap
Riera de Merlès
IUCN Not ReportedSpecial Protection Area (Birds Directive)
13.86 km² overlap
Riera de Merlès
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
13.86 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
5 175 distinct species · 97 497 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Gavarresa : 19 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 132 interactions GloBI sur 5 types (connectance 21.0%, filtre Serrano α=0.2). 17 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°
12,8°C
Annual rain
722mm
Moisture idx (CMI)
-0,16
Runoff
291mm/an
PET
865mm
AET
611mm
Mean slope
7,5°
Water table
336cm
Forest
84%
Crops
8%
Urban
0%
Protected
12%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)