Rivière· 23 segments
La Varenne
Crosses 3 administrative regions : Maine-et-Loire, Mayenne, Orne
Total length
117km
Max discharge
15,1m³/s
Max Strahler
4
Segments matched
23
River geography3 admin regions · 31 communes
3 administrative regions crossed (GADM L2)
- OrneNormandie · France50.3 kmin this dpt
- MayennePays de la Loire · France26.1 kmin this dpt
- Maine-et-LoirePays de la Loire · France5.3 kmin this dpt
31 communes (L5)For countries with L5
- Le Pas13.49 km
- Ambrières-les-Vallées10.69 km
- Saint-Bômer-les-Forges5.48 km
- Ceaucé5.48 km
- Messei5.28 km
- Saint-Fraimbault5.07 km
- Le Châtellier4.69 km
- Domfront3.90 km
- Torchamp3.78 km
- Saint-Mars-d'Égrenne3.35 km
- La Haute-Chapelle2.86 km
- Banvou2.80 km
- Échalou2.73 km
- Saint-André-de-Messei2.02 km
- Champsecret1.82 km
- Saint-Germain-sur-Moine1.76 km
- La Renaudière1.65 km
- Montfaucon-Montigné1.29 km
- Soucé1.05 km
- Dompierre0.91 km
- Couesmes-Vaucé0.75 km
- Roussay0.60 km
- Saires-la-Verrerie0.16 km
- Oisseau0.11 km
- Saint-Macaire-en-Mauges0.00 km
- Bellou-en-Houlme0.00 km
- Saint-Loup-du-Gast0.00 km
- Saint-Gilles-des-Marais0.00 km
- Brecé0.00 km
- Saint-Mars-sur-Colmont0.00 km
- Saint-Brice0.00 km
7 intersecting protected areas
Normandie-Maine
IUCN VRegional Nature Park
Bassin de l'Andainette
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Rivière La Halouze
IUCN IVBiotope Protection Order
La Rivière L\'Andainette
IUCN IVBiotope Protection Order
Rivière La Varenne
IUCN IVBiotope Protection Order
Biotope Protection Order
la chapelle des roches
IUCN IVLand acquired by a regional conservatory of natural areas
1 page = 1 named river (aggregation of 23 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
706 distinct species · 1 299 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 43 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 La Varenne : 32 espèces reliées par 127 interactions GloBI sur 5 types (connectance 14.1%, filtre Serrano α=0.2). 11 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
117km
Max discharge
15,1m³/s
Max Strahler
4
Segments matched
23
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.