HydroBASINS lev08 watershed · #6080016640
Bassin de Arenal Grande
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 6 administrative regions across 2 countries : Carmelo, Dolores, Islas del Ibicuy, NA, Nueva Palmira
Sub-basin area
582,9km²
Upstream area
582,9km²
Discharge
1,96m³/s
Mean elev.
28m
Administrative coverage
6 dept-equivalent regions (GADM L2)
- 406.9 km²69.8% of basin
- 85.0 km²14.6% of basin
- 42.8 km²7.3% of basin
- 28.1 km²4.8% of basin
- 7.0 km²1.2% of basin
- 1.9 km²0.3% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
303 distinct species · 2 181 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Arenal Grande : 31 espèces reliées par 36 interactions GloBI sur 4 types (connectance 5.4%, filtre Serrano α=0.2). 6 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°
17,0°C
Annual rain
876mm
Moisture idx (CMI)
-0,31
Runoff
437mm/an
PET
1 273mm
AET
743mm
Mean slope
1,0°
Water table
66cm
Forest
19%
Crops
33%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)