Ontologia

HydroBASINS lev08 watershed · #7080019190

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

Pfafstetter: 78360011

Sub-basin area

1 011,7km²

Upstream area

19 829,5km²

Discharge

787,72m³/s

Mean elev.

796m

Administrative coverage

Hydrographic chain

▼ Drains into

Outlet (drains to ocean / endorheic)

▲ 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

233 distinct species · 1 727 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 727 obs · 23 cellules
Obs. / cellule
≥ 414
237–413
102–236
3–101
< 3

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

Ecological tissue

Sample of 43 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 : 25 espèces reliées par 128 interactions GloBI sur 6 types (connectance 12.4%, filtre Serrano α=0.2). 21 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
46
Interactions affichées
128
Connectance
0.124
Patrimoniales
0
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°

3,3°C

Annual rain

1 370mm

Moisture idx (CMI)

0,58

Runoff

1 371mm/an

PET

569mm

AET

491mm

Mean slope

20,7°

Water table

632cm

Forest

36%

Crops

0%

Urban

0%

Protected

5%

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