Ontologia

HydroBASINS lev08 watershed · #7080334600

Bassin de Snohomish 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 : King, Snohomish

Pfafstetter: 78310603

Sub-basin area

64,4km²

Upstream area

4 019,2km²

Discharge

228,7m³/s

Mean elev.

85m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Snohomish River105 km²

▲ Receives from 2 basins

2 dept-equivalent regions (GADM L2)

3 intersecting protected areas

  • Us-Wa-130-2

    IUCN Not Assigned

    Conservation Easement

    0.25 km² overlap

  • Us-Wa-185-6

    IUCN Not Assigned

    Conservation Easement

    0.16 km² overlap

  • Sharingwood

    IUCN Not Assigned

    Conservation Easement

    0.09 km² overlap

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

Species present

1 243 distinct species · 50 868 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

50 868 obs · 3 cellules
Obs. / cellule
≥ 37 099
37 099–37 098
37 099–37 098
7 606–37 098
< 7 606

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

Ecological tissue

Sample of 38 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 Snohomish River : 25 espèces reliées par 81 interactions GloBI sur 5 types (connectance 10.9%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
39
Interactions affichées
81
Connectance
0.109
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°

10,3°C

Annual rain

1 173mm

Moisture idx (CMI)

0,29

Runoff

1 114mm/an

PET

832mm

AET

617mm

Mean slope

4,2°

Water table

278cm

Forest

66%

Crops

7%

Urban

10%

Protected

0%

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