HydroBASINS lev08 watershed · #8080303750
Bassin de William River
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 : Division No. 18
Sub-basin area
289,8km²
Upstream area
6 240,2km²
Discharge
12,35m³/s
Mean elev.
249m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de William River679 km²
- Bassin de William River217 km²
1 dept-equivalent regions (GADM L2)
- Division No. 18291.3 km²100.0% of basin
1 intersecting protected areas
Wilderness Park
203.78 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
160 distinct species · 444 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 William River : 27 espèces reliées par 45 interactions GloBI sur 6 types (connectance 6.4%, filtre Serrano α=0.2). 11 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°
-2,6°C
Annual rain
362mm
Moisture idx (CMI)
-0,36
Runoff
143mm/an
PET
562mm
AET
317mm
Mean slope
0,6°
Water table
15cm
Forest
1%
Crops
0%
Urban
0%
Protected
70%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)