HydroBASINS lev08 watershed · #7080057190
Bassin de Nias 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 : Kitimat-Stikine
Sub-basin area
3 000,1km²
Upstream area
3 000,1km²
Discharge
53,71m³/s
Mean elev.
239m
Administrative coverage
1 dept-equivalent regions (GADM L2)
- 2842.1 km²94.4% of basin
6 intersecting protected areas
Conservancy
1027.61 km² overlap
Conservancy
291.36 km² overlap
KT'II/RACEY CONSERVANCY
IUCN IIConservancy
12.53 km² overlap
K'NABIYAAXL/ASHDOWN CONSERVANCY
IUCN IIIConservancy
4.53 km² overlap
K'NABIYAAXL/ASHDOWN CONSERVANCY
IUCN IIIConservancy
2.35 km² overlap
SMITHERS ISLAND CONSERVANCY
IUCN IbConservancy
0.56 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 317 distinct species · 96 608 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Nias Creek : 21 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 86 interactions GloBI sur 5 types (connectance 14.5%, filtre Serrano α=0.2). 14 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°
7,0°C
Annual rain
2 797mm
Moisture idx (CMI)
0,82
Runoff
3 604mm/an
PET
516mm
AET
514mm
Mean slope
17,1°
Water table
593cm
Forest
88%
Crops
0%
Urban
0%
Protected
45%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)