Rivière· 6 segments
L'Orvanne
Crosses 2 administrative regions : Seine-et-Marne, Yonne
Total length
51km
Max discharge
28,3m³/s
Max Strahler
5
Segments matched
6
River geography2 admin regions · 25 communes
2 administrative regions crossed (GADM L2)
- Seine-et-MarneÎle-de-France · France23.6 kmin this dpt
- YonneBourgogne-Franche-Comté · France17.5 kmin this dpt
25 communes (L5)For countries with L5
- Saint-Valérien5.00 km
- Villethierry4.85 km
- Diant4.67 km
- Flagy4.63 km
- Thoury-Férottes4.13 km
- Blennes3.56 km
- Vallery3.52 km
- Voulx3.22 km
- Dollot3.19 km
- Veneux-les-Sablons1.61 km
- Moret-sur-Loing1.49 km
- Fouchères0.99 km
- Champagne-sur-Seine0.22 km
- Écuelles0.08 km
- Vernou-la-Celle-sur-Seine0.00 km
- Chaumont0.00 km
- Lixy0.00 km
- Saint-Agnan0.00 km
- Chevry-en-Sereine0.00 km
- Noisy-Rudignon0.00 km
- Saint-Ange-le-Viel0.00 km
- Villemaréchal0.00 km
- Dormelles0.00 km
- Saint-Mammès0.00 km
- Thomery0.00 km
10 intersecting protected areas
Massif de Fontainebleau
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Massif de Fontainebleau
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Rivières du Loing et du Lunain
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Land acquired by a regional conservatory of natural areas
Biotope Protection Order
vallee du cygne
IUCN IVLand acquired by a regional conservatory of natural areas
montagne creuse
IUCN IVLand acquired by a regional conservatory of natural areas
vallee de l orvanne
IUCN IVLand acquired by a regional conservatory of natural areas
marais du lutin
IUCN IVLand acquired by a regional conservatory of natural areas
1 more protected areassorted by area
orpheline6
IUCN IVLand acquired by a regional conservatory of natural areas
1 page = 1 named river (aggregation of 6 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
799 distinct species · 7 214 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 L'Orvanne : 26 espèces reliées par 128 interactions GloBI sur 6 types (connectance 20.3%, filtre Serrano α=0.2). 10 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
51km
Max discharge
28,3m³/s
Max Strahler
5
Segments matched
6
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.