Ontologia

HydroBASINS lev08 watershed · #7080371080

Bassin de Cowlitz 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 3 administrative regions : Lewis, Pierce, Yakima

Pfafstetter: 78210029

Sub-basin area

1 520km²

Upstream area

1 520,3km²

Discharge

86,07m³/s

Mean elev.

1 082m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Cowlitz River389 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

6 intersecting protected areas

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

Species present

3 039 distinct species · 81 582 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

81 582 obs · 47 cellules
Obs. / cellule
≥ 16 620
7 316–16 619
793–7 315
458–792
< 458

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

Ecological tissue

Sample of 44 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 Cowlitz River : 33 espèces reliées par 81 interactions GloBI sur 4 types (connectance 8.6%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
44
Interactions affichées
81
Connectance
0.086
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°

5,7°C

Annual rain

2 126mm

Moisture idx (CMI)

0,63

Runoff

1 330mm/an

PET

756mm

AET

605mm

Mean slope

19,1°

Water table

675cm

Forest

94%

Crops

1%

Urban

0%

Protected

39%

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