HydroBASINS lev08 watershed · #7080058770
Bassin de Big John Creek
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 : Wrangell-Petersburg
Sub-basin area
192,3km²
Upstream area
192,3km²
Discharge
14,31m³/s
Mean elev.
91m
Administrative coverage
1 dept-equivalent regions (GADM L2)
- 167.3 km²86.5% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
54 distinct species · 316 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 30 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 Big John Creek : 27 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 34 interactions GloBI sur 3 types (connectance 7.8%, filtre Serrano α=0.2). 3 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°
5,6°C
Annual rain
2 716mm
Moisture idx (CMI)
0,81
Runoff
2 471mm/an
PET
511mm
AET
511mm
Mean slope
5,3°
Water table
191cm
Forest
69%
Crops
0%
Urban
0%
Protected
53%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)