Ruisseau· 23 segments
La Varenne
Crosses 1 administrative regions : Seine-Maritime
Total length
117km
Max discharge
13,7m³/s
Max Strahler
3
Segments matched
23
River geography1 admin regions · 44 communes
1 administrative regions crossed (GADM L2)
- Seine-MaritimeNormandie · France76.9 kmin this dpt
44 communes (L5)For countries with L5
- Saint-Martin-Osmonville13.02 km
- Saint-Saëns7.83 km
- Montérolier6.37 km
- Saint-Germain-d'Étables6.10 km
- Bellencombre6.00 km
- Saint-Aubin-le-Cauf3.92 km
- Saint-Hellier3.81 km
- Torcy-le-Grand2.84 km
- Rosay2.73 km
- Pommeréval2.43 km
- Sévis2.35 km
- Muchedent2.29 km
- Arques-la-Bataille2.20 km
- Torcy-le-Petit2.18 km
- Bosc-Roger-sur-Buchy2.08 km
- Rocquemont1.63 km
- Neufbosc1.49 km
- Les Grandes-Ventes1.46 km
- Martigny0.89 km
- Ardouval0.87 km
- Mathonville0.84 km
- Maucomble0.78 km
- Bosc-Mesnil0.77 km
- Freulleville0.69 km
- Martin-Église0.60 km
- Ventes-Saint-Rémy0.34 km
- La Crique0.28 km
- Sainte-Geneviève0.12 km
- Sainte-Foy0.00 km
- Bradiancourt0.00 km
- Saint-Honoré0.00 km
- Le Catelier0.00 km
- Le Bois-Robert0.00 km
- La Chapelle-du-Bourgay0.00 km
- Dampierre-Saint-Nicolas0.00 km
- Cressy0.00 km
- Meulers0.00 km
- Sommery0.00 km
- Montreuil-en-Caux0.00 km
- Bosc-Bordel0.00 km
- Bully0.00 km
- Buchy0.00 km
- Rouxmesnil-Bouteilles0.00 km
- Bosc-Bérenger0.00 km
3 intersecting protected areas
Pays de Bray – Cuestas Nord et Sud
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Forêt d'Eawy
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Bassin de l'Arques
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1 page = 1 named river (aggregation of 23 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
1 088 distinct species · 7 592 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 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 : 20 espèces reliées par 74 interactions GloBI sur 5 types (connectance 19.6%, filtre Serrano α=0.2). 8 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
13,7m³/s
Max Strahler
3
Segments matched
23
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.