Ontologia

HydroBASINS lev08 watershed · #7080415090

Bassin de Willamette 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 : Marion, Polk

2% lakePfafstetter: 78220059

Sub-basin area

226,6km²

Upstream area

18 512km²

Discharge

699,82m³/s

Mean elev.

81m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Croisan Creek42 km²

▲ Receives from 2 basins

2 dept-equivalent regions (GADM L2)

7 intersecting protected areas

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

Species present

1 122 distinct species · 84 346 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

84 346 obs · 5 cellules
Obs. / cellule
≥ 27 490
27 490–27 489
20 939–27 489
14 631–20 938
< 14 631

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

Ecological tissue

Sample of 36 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 Willamette River : 26 espèces reliées par 87 interactions GloBI sur 4 types (connectance 13.1%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
37
Interactions affichées
87
Connectance
0.131
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°

11,1°C

Annual rain

1 168mm

Moisture idx (CMI)

0,10

Runoff

1 157mm/an

PET

1 041mm

AET

609mm

Mean slope

2,3°

Water table

97cm

Forest

6%

Crops

58%

Urban

7%

Protected

3%

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