Ruisseau· 3 segments
L'Orval
Crosses 2 administrative regions : Seine-et-Marne, Yonne
ruisseau
Total length
9km
Max discharge
0,3m³/s
Max Strahler
2
Segments matched
3
River geography2 admin regions · 7 communes
2 administrative regions crossed (GADM L2)
- YonneBourgogne-Franche-Comté · France13.8 kmin this dpt
- Seine-et-MarneÎle-de-France · France0.8 kmin this dpt
7 communes (L5)For countries with L5
- Villethierry7.03 km
- Lixy3.85 km
- Brannay2.79 km
- Blennes0.76 km
- Vallery0.18 km
- Villebougis0.00 km
- Dollot0.00 km
1 page = 1 named river (aggregation of 3 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
935 distinct species · 15 175 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Graphe en cours d’indexation
Calcul du tissu écologique de cette entité.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 2s).
Hydrology (HydroRIVERS v10)
Total length
9km
Max discharge
0,3m³/s
Max Strahler
2
Segments matched
3
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.