HydroBASINS lev08 watershed · #7080281650
Bassin de Nahatlatch 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 2 administrative regions : Fraser Valley, Thompson-Nicola
Sub-basin area
1 212,1km²
Upstream area
1 212,1km²
Discharge
41,29m³/s
Mean elev.
1 417m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 1206.6 km²99.2% of basin
- 9.5 km²0.8% of basin
8 intersecting protected areas
MEHATL CREEK PARK
IUCN IIA - Park
256.61 km² overlap
Wildlife Habitat Areas
IUCN Not ApplicableWildlife Habitat Areas
152.44 km² overlap
Old Growth Management Areas (Mapped Legal)
IUCN Not ApplicableOld Growth Management Areas (Mapped Legal)
53.31 km² overlap
NAHATLATCH PARK
IUCN IIA - Park
20.13 km² overlap
A - Park
3.95 km² overlap
Sea To Sky Wildland Areas
IUCN Not ApplicableSea To Sky Wildland Areas
1.33 km² overlap
NAHATLATCH PROTECTED AREA
IUCN IIProtected Area
0.65 km² overlap
Conservancy
0.15 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
561 distinct species · 2 846 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 51 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 Nahatlatch River : 38 espèces reliées par 126 interactions GloBI sur 5 types (connectance 9.1%, filtre Serrano α=0.2). 15 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°
3,0°C
Annual rain
812mm
Moisture idx (CMI)
0,20
Runoff
1 069mm/an
PET
644mm
AET
469mm
Mean slope
25,9°
Water table
910cm
Forest
52%
Crops
0%
Urban
0%
Protected
22%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)