Rivière· 202 segments
Grand River
Crosses 27 administrative regions : Ashtabula, Brant, Clinton, Columbia, Dodge +21
Total length
1 986km
Max discharge
135,9m³/s
Max Strahler
5
Segments matched
202
River geography27 admin regions · 0 communes
27 administrative regions crossed (GADM L2)
- IoniaMichigan · United States94.1 kmin this dpt
- DufferinOntario · Canada72.0 kmin this dpt
- KentMichigan · United States67.7 kmin this dpt
- BrantOntario · Canada67.4 kmin this dpt
- JacksonMichigan · United States64.9 kmin this dpt
- Haldimand-NorfolkOntario · Canada62.2 kmin this dpt
- Green LakeWisconsin · United States57.7 kmin this dpt
- WaterlooOntario · Canada52.4 kmin this dpt
- EatonMichigan · United States51.9 kmin this dpt
- OttawaMichigan · United States51.2 kmin this dpt
- WellingtonOntario · Canada42.7 kmin this dpt
- LakeOhio · United States42.1 kmin this dpt
- InghamMichigan · United States41.2 kmin this dpt
- AshtabulaOhio · United States35.9 kmin this dpt
- TrumbullOhio · United States22.4 kmin this dpt
- GeaugaOhio · United States13.3 kmin this dpt
- ClintonMichigan · United States11.6 kmin this dpt
- Fond du LacWisconsin · United States9.9 kmin this dpt
- Lake ErieOhio · United States9.3 kmin this dpt
- MarquetteWisconsin · United States7.8 kmin this dpt
- HillsdaleMichigan · United States4.0 kmin this dpt
- GreyOntario · Canada3.9 kmin this dpt
- Lake ErieOntario · Canada2.1 kmin this dpt
- Lake MichiganMichigan · United States1.9 kmin this dpt
- ColumbiaWisconsin · United States0.2 kmin this dpt
- DodgeWisconsin · United States0.0 kmin this dpt
- PortageOhio · United States0.0 kmin this dpt
30 intersecting protected areas
Nature Preserve
Scattered Wildlife
IUCN VWildlife Area
Grand River Marsh
IUCN VWildlife Area
Grand River
IUCN VWildlife Area
Reserve Program
Statewide Habitat Areas
IUCN VHabitat Area
Wetlands Reserve Program (WRP)
IUCN Not AssignedReserve Program
Farm Service Agency Interest Of Mi
IUCN Not AssignedConservation Easement
Ce-Lcwm
IUCN Not AssignedConservation Easement
21 more protected areassorted by area
Portland State
IUCN VGame Area
Reserve Program
Reserve Program
Reserve Program
Saranac-Lowell State
IUCN VGame Area
Morgan Swamp Fee
IUCN VPrivate Conservation Land
Reserve Program
Cannonsburg State
IUCN VGame Area
11-70-0079
IUCN Not AssignedConservation Easement
Grand River State
IUCN VGame Area
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
Reserve Program
Somerset
IUCN VWildlife Reserve
Bakale Wildlife Unit of Bass River State
IUCN Not AssignedRecreation Area
Reserve Program
Provincial Park
Lake
Camp Stigwandish
IUCN VNature Preserve
Kraft Tract Acquisition
IUCN Not AssignedConservation Area
Unknown
IUCN VNature Preserve
Hofma
IUCN VPreserve
1 page = 1 named river (aggregation of 202 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
553 distinct species · 78 625 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Grand River : 24 espèces reliées par 79 interactions GloBI sur 4 types (connectance 12.5%, filtre Serrano α=0.2). 12 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
1 986km
Max discharge
135,9m³/s
Max Strahler
5
Segments matched
202
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.