Rivière· 94 segments

Lewis River

Crosses 6 administrative regions : Clark, Columbia, Cowlitz, Multnomah, Skamania +1

rivière

Total length

313km

Max discharge

130,1m³/s

Max Strahler

Segments matched

River geography6 admin regions · 0 communes

Parent watershed

hybas-70803885502713 km²

6 administrative regions crossed (GADM L2)

Skamania
Washington · United States
117.5 km
in this dpt
Clark
Washington · United States
51.4 km
in this dpt
Teton
Wyoming · United States
40.9 km
in this dpt
Cowlitz
Washington · United States
19.2 km
in this dpt
Multnomah
Oregon · United States
0.4 km
in this dpt
Columbia
Oregon · United States
0.0 km
in this dpt

12 intersecting protected areas

Yellowstone National Park
IUCN Not Applicable
World Heritage Site (natural or mixed)
Yellowstone
IUCN II
National Park
Yellowstone
IUCN Not Applicable
UNESCO-MAB Biosphere Reserve
Yellowstone Proposed or Recom
IUCN Ib
Recommended Wilderness
Mount St. Helens
IUCN V
National Volcanic Monument
Mount Adams
IUCN Ib
Wilderness
Sauvie Island
IUCN V
Wildlife Area
Mount Saint Helens-Shillapoo
IUCN V
Wildlife Area Complex
White Salmon, Washington
IUCN V
Wild and Scenic River

3 more protected areassorted by area

Ridgefield
IUCN IV
National Wildlife Refuge
Columbia Land Trust
IUCN V
Local Land Trust
Cedar Flats
IUCN Ia
Research Natural Area

1 page = 1 named river (aggregation of 94 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

204 distinct species · 1 346 observations

Source: GBIF Occurrence snapshot 2026-05-01.

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

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Lewis River : 17 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 116 interactions GloBI sur 5 types (connectance 17.4%, filtre Serrano α=0.2). 20 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

116

Connectance

0.174

Patrimoniales

Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydrology (HydroRIVERS v10)