HydroBASINS lev08 watershed · #7080156810
Bassin de Twain 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 : Bulkley-Nechako
Sub-basin area
1 149km²
Upstream area
3 014,2km²
Discharge
27,89m³/s
Mean elev.
955m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Sutherland River1016 km²
- Bassin de Pinkut Creek849 km²
1 dept-equivalent regions (GADM L2)
- 1154.2 km²100.0% of basin
6 intersecting protected areas
Old Growth Management Areas (Mapped Legal)
IUCN Not ApplicableOld Growth Management Areas (Mapped Legal)
32.69 km² overlap
Conservancy
16.64 km² overlap
PORT ARTHUR CONSERVANCY
IUCN IIConservancy
3.43 km² overlap
BABINE LAKE MARINE PARK
IUCN Not ReportedA - Park
3.08 km² overlap
LONG ISLAND CONSERVANCY
IUCN IIConservancy
0.13 km² overlap
SAND POINT CONSERVANCY
IUCN IIIConservancy
0.11 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
164 distinct species · 823 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 49 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 Twain Creek : 38 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 93 interactions GloBI sur 5 types (connectance 7.9%, 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°
1,5°C
Annual rain
497mm
Moisture idx (CMI)
-0,22
Runoff
265mm/an
PET
638mm
AET
418mm
Mean slope
4,3°
Water table
161cm
Forest
79%
Crops
0%
Urban
0%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)