Ruisseau· 63 segments

Willow River

Crosses 8 administrative regions : Aitkin, Cass, Itasca, Oneida, Pine +3

ruisseau

Total length

847km

Max discharge

8,8m³/s

Max Strahler

Segments matched

River geography8 admin regions · 0 communes

Parent watershed

hybas-70803881202651 km²

8 administrative regions crossed (GADM L2)

Saint Croix
Wisconsin · United States
96.4 km
in this dpt
Aitkin
Minnesota · United States
72.7 km
in this dpt
Cass
Minnesota · United States
54.3 km
in this dpt
Pine
Minnesota · United States
48.5 km
in this dpt
Oneida
Wisconsin · United States
30.9 km
in this dpt
Polk
Wisconsin · United States
8.8 km
in this dpt
Itasca
Minnesota · United States
4.4 km
in this dpt
Washington
Minnesota · United States
0.0 km
in this dpt

16 intersecting protected areas

Moose Willow
IUCN V
State Wildlife Management Area
Scattered Wildlife
IUCN V
Wildlife Area
Willow Flowage Scenic Waters Area
IUCN Not Assigned
Conservation Easement
Farm Service Agency Interest Of Wi
IUCN Not Assigned
Conservation Easement
Statewide
IUCN V
Wildlife Habitat
Willow River
IUCN V
Wildlife Area
Cylon
IUCN V
Wildlife Area
Scattered Wildlife
IUCN V
Conservation Area
Willowsippi
IUCN V
State Wildlife Management Area

7 more protected areassorted by area

Western Prairie Habitat Restorat
IUCN Not Assigned
Conservation Easement
Roberts-Wickstrom
IUCN V
State Wildlife Management Area
Hay Point
IUCN V
State Wildlife Management Area
Camp Miller State Aquatic Management Area - Open (Pine)
IUCN V
Aquatic Management Area
Big Rice
IUCN V
State Wildlife Management Area
Willow Lake Deer Yard
IUCN V
State Wildlife Management Area
Wetlands Reserve Program (WRP), St. Croix, WI
IUCN V
Reserve Program

1 page = 1 named river (aggregation of 63 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

114 distinct species · 337 observations

Source: GBIF Occurrence snapshot 2026-05-01.

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

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Willow River : 27 espèces reliées par 80 interactions GloBI sur 4 types (connectance 10.8%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.108

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)