HydroBASINS lev08 watershed · #7080183450
Bassin de Gregg 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 3 administrative regions : Bulkley-Nechako, Cariboo, Fraser-Fort George
Sub-basin area
997,4km²
Upstream area
2 907,9km²
Discharge
17,33m³/s
Mean elev.
837m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Butcherflats Creek343 km²
- Bassin de Chilako River343 km²
3 dept-equivalent regions (GADM L2)
- 781.8 km²78.1% of basin
- 152.2 km²15.2% of basin
- 67.6 km²6.7% of basin
2 intersecting protected areas
BOBTAIL MOUNTAIN PARK
IUCN IIA - Park
11.13 km² overlap
Old Growth Management Areas (Mapped Legal)
IUCN Not ApplicableOld Growth Management Areas (Mapped Legal)
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
280 distinct species · 2 987 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Gregg Creek : 23 espèces reliées par 80 interactions GloBI sur 5 types (connectance 13.4%, filtre Serrano α=0.2). 12 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°
2,7°C
Annual rain
536mm
Moisture idx (CMI)
-0,28
Runoff
261mm/an
PET
744mm
AET
453mm
Mean slope
3,9°
Water table
251cm
Forest
88%
Crops
0%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)