Ruisseau· 11 segments
La Calonne
Crosses 2 administrative regions : Calvados, Eure
Total length
56km
Max discharge
22m³/s
Max Strahler
3
Segments matched
11
River geography2 admin regions · 32 communes
2 administrative regions crossed (GADM L2)
32 communes (L5)For countries with L5
- Saint-Pierre-de-Cormeilles6.05 km
- Bonneville-la-Louvet4.85 km
- Saint-André-d'Hébertot3.83 km
- Fontaine-la-Louvet3.31 km
- Bailleul-la-Vallée2.96 km
- Cormeilles2.67 km
- Pont-l'Évêque2.61 km
- Asnières2.61 km
- Surville2.26 km
- Épaignes2.05 km
- Saint-Aubin-de-Scellon1.57 km
- Coudray-Rabut1.56 km
- Saint-Julien-sur-Calonne1.56 km
- Les Authieux-sur-Calonne1.50 km
- Saint-Sylvestre-de-Cormeilles1.36 km
- Duranville1.18 km
- Barville1.13 km
- La Lande-Saint-Léger0.54 km
- La Chapelle-Bayvel0.34 km
- Saint-Gatien-des-Bois0.00 km
- Bournainville-Faverolles0.00 km
- Drucourt0.00 km
- Folleville0.00 km
- Piencourt0.00 km
- Vieux-Bourg0.00 km
- Saint-Benoît-d'Hébertot0.00 km
- Saint-Martin-aux-Chartrains0.00 km
- Reux0.00 km
- Moyaux0.00 km
- Fresne-Cauverville0.00 km
- Le Bois-Hellain0.00 km
- Morainville-Jouveaux0.00 km
3 intersecting protected areas
Biotope Protection Order
Le Haut Bassin de la Calonne
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Ruisseau des marnes
IUCN IVBiotope Protection Order
1 page = 1 named river (aggregation of 11 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
691 distinct species · 2 250 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).
Indicateurs du tissu écologique
Tissu écologique de La Calonne : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 74 interactions GloBI sur 4 types (connectance 10.5%, filtre Serrano α=0.2). 9 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
56km
Max discharge
22,0m³/s
Max Strahler
3
Segments matched
11
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.