HydroBASINS lev08 watershed · #7080169950
Bassin de Cowan 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 3 administrative regions : Division No. 16, Division No. 17, Division No. 18
Sub-basin area
523,2km²
Upstream area
4 184,7km²
Discharge
3,12m³/s
Mean elev.
502m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Big River1111 km²
- Bassin de Otter Creek428 km²
3 dept-equivalent regions (GADM L2)
- Division No. 17209.4 km²39.8% of basin
- Division No. 16170.9 km²32.5% of basin
- Division No. 18145.2 km²27.6% of basin
2 intersecting protected areas
Cowan Dam Recreation Site
IUCN Not ApplicableRecreation Site
0.13 km² overlap
Wildlife Habitat Protection
IUCN Not ApplicableWildlife Habitat Protection
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
227 distinct species · 1 502 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 Cowan River : 22 espèces reliées par 68 interactions GloBI sur 4 types (connectance 12.9%, 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°
0,4°C
Annual rain
438mm
Moisture idx (CMI)
-0,37
Runoff
9mm/an
PET
692mm
AET
381mm
Mean slope
0,8°
Water table
10cm
Forest
93%
Crops
1%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)