HydroBASINS lev08 watershed · #7080193330
Bassin de St. Thomas 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 : Bulkley-Nechako, Central Coast, Kitimat-Stikine
Sub-basin area
850,7km²
Upstream area
850,9km²
Discharge
15,76m³/s
Mean elev.
1 131m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 845.7 km²99.0% of basin
- 7.4 km²0.9% of basin
- 1.1 km²0.1% of basin
2 intersecting protected areas
TWEEDSMUIR PARK
IUCN IIA - Park
851.71 km² overlap
Conservancy
0.39 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
22 distinct species · 25 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Not enough documented interactions to build a meaningful graph for this territory.
Hydroclimate (BasinATLAS lev08)
Mean T°
2,0°C
Annual rain
894mm
Moisture idx (CMI)
0,33
Runoff
783mm/an
PET
579mm
AET
455mm
Mean slope
8,5°
Water table
411cm
Forest
61%
Crops
0%
Urban
0%
Protected
100%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)