HydroBASINS lev08 watershed · #5080076380
Bassin de Alexander 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 : Esperance
Sub-basin area
556,1km²
Upstream area
556,1km²
Discharge
0,67m³/s
Mean elev.
132m
Administrative coverage
1 dept-equivalent regions (GADM L2)
- 555.8 km²100.0% of basin
6 intersecting protected areas
Muntz
IUCN IaNature Reserve
35.70 km² overlap
Unnamed WA32131
IUCN IaNature Reserve
10.58 km² overlap
Alexander
IUCN IaNature Reserve
7.89 km² overlap
Neredup
IUCN IaNature Reserve
4.00 km² overlap
Beaumont
IUCN IaNature Reserve
2.57 km² overlap
Unnamed WA27087
IUCN IaNature Reserve
0.38 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
585 distinct species · 1 528 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 16 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 Alexander River : 13 espèces reliées par 15 interactions GloBI sur 2 types (connectance 8.8%, 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°
16,6°C
Annual rain
511mm
Moisture idx (CMI)
-0,60
Runoff
19mm/an
PET
1 277mm
AET
436mm
Mean slope
0,4°
Water table
572cm
Forest
28%
Crops
7%
Urban
0%
Protected
11%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)