Ontologia

HydroBASINS lev08 watershed · #7080148690

Bassin de Nass 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 1 administrative regions : Kitimat-Stikine

11% lakePfafstetter: 78360013

Sub-basin area

440,6km²

Upstream area

18 353km²

Discharge

723,85m³/s

Mean elev.

541m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Nass River1012 km²

▲ Receives from 2 basins

1 dept-equivalent regions (GADM L2)

3 intersecting protected areas

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

292 distinct species · 2 053 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 053 obs · 11 cellules
Obs. / cellule
≥ 1 385
307–1 384
73–306
25–72
< 25

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Sample of 47 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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Nass River : 32 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 107 interactions GloBI sur 6 types (connectance 8.7%, filtre Serrano α=0.2). 18 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
50
Interactions affichées
107
Connectance
0.087
Patrimoniales
2
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

4,0°C

Annual rain

1 082mm

Moisture idx (CMI)

0,41

Runoff

1 058mm/an

PET

635mm

AET

485mm

Mean slope

12,4°

Water table

342cm

Forest

81%

Crops

0%

Urban

0%

Protected

2%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)