Rivière· 109 segments
Cowlitz River
Crosses 4 administrative regions : Columbia, Cowlitz, Lewis, Multnomah
Total length
206km
Max discharge
286,6m³/s
Max Strahler
5
Segments matched
109
River geography4 admin regions · 0 communes
4 administrative regions crossed (GADM L2)
2 intersecting protected areas
Peterman Ridge
IUCN Not AssignedConservation Easement
Cowlitz River
IUCN VPrivate Conservation
1 page = 1 named river (aggregation of 109 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
167 distinct species · 1 082 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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).
Indicateurs du tissu écologique
Tissu écologique de Cowlitz River : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 73 interactions GloBI sur 3 types (connectance 9.9%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
206km
Max discharge
286,6m³/s
Max Strahler
5
Segments matched
109
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.