HydroBASINS lev08 watershed · #4080993490
Bassin de Arpa
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 1 administrative regions : Bilaspur
Sub-basin area
124,4km²
Upstream area
487km²
Discharge
8,23m³/s
Mean elev.
544m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Arpa196 km²
- Bassin de Arpa166 km²
1 dept-equivalent regions (GADM L2)
- Bilaspur124.1 km²100.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
82 distinct species · 119 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 25 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 Arpa : 21 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 29 interactions GloBI sur 3 types (connectance 9.7%, filtre Serrano α=0.2). 4 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°
24,7°C
Annual rain
1 313mm
Moisture idx (CMI)
-0,19
Runoff
523mm/an
PET
1 618mm
AET
823mm
Mean slope
4,4°
Water table
209cm
Forest
94%
Crops
21%
Urban
6%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)