Ontologia

HydroBASINS lev08 watershed · #7080135150

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

39% lakePfafstetter: 78360050

Sub-basin area

986,6km²

Upstream area

12 710,8km²

Discharge

511,84m³/s

Mean elev.

768m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Nass River1121 km²

▲ Receives from 2 basins

1 dept-equivalent regions (GADM L2)

5 intersecting protected areas

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

Species present

661 distinct species · 4 643 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

4 643 obs · 27 cellules
Obs. / cellule
≥ 2 613
401–2 612
76–400
21–75
< 21

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

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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Nass River : 32 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 103 interactions GloBI sur 5 types (connectance 8.4%, filtre Serrano α=0.2). 18 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
50
Interactions affichées
103
Connectance
0.084
Patrimoniales
1
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°

2,4°C

Annual rain

953mm

Moisture idx (CMI)

0,37

Runoff

1 541mm/an

PET

601mm

AET

462mm

Mean slope

13,9°

Water table

420cm

Forest

49%

Crops

0%

Urban

0%

Protected

24%

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