Ruisseau· 17 segments
L'Ourcq
Crosses 3 administrative regions : Aisne, Oise, Seine-et-Marne
Total length
80km
Max discharge
7,2m³/s
Max Strahler
3
Segments matched
17
River geography3 admin regions · 46 communes
3 administrative regions crossed (GADM L2)
- AisneHauts-de-France · France45.5 kmin this dpt
- Seine-et-MarneÎle-de-France · France14.2 kmin this dpt
- OiseHauts-de-France · France4.9 kmin this dpt
46 communes (L5)For countries with L5
- Rozet-Saint-Albin5.08 km
- Sergy4.55 km
- Chouy4.17 km
- Bruyères-sur-Fère3.97 km
- Mareuil-sur-Ourcq3.87 km
- Breny3.81 km
- Ocquerre3.75 km
- Lizy-sur-Ourcq3.57 km
- Crouy-sur-Ourcq3.53 km
- Fère-en-Tardenois3.29 km
- May-en-Multien2.68 km
- Oulchy-le-Château2.50 km
- Saponay1.92 km
- Armentières-sur-Ourcq1.88 km
- Fresnes-en-Tardenois1.78 km
- Noroy-sur-Ourcq1.77 km
- Troësnes1.73 km
- Villers-sur-Fère1.44 km
- Courmont1.39 km
- Vichel-Nanteuil1.19 km
- Marizy-Sainte-Geneviève1.09 km
- Neufchelles1.03 km
- Cierges1.00 km
- La Ferté-Milon0.86 km
- Montgru-Saint-Hilaire0.73 km
- Nanteuil-Notre-Dame0.41 km
- Neuilly-Saint-Front0.39 km
- Isles-les-Meldeuses0.37 km
- Mary-sur-Marne0.28 km
- Seringes-et-Nesles0.23 km
- Silly-la-Poterie0.18 km
- Marizy-Saint-Mard0.15 km
- Beugneux0.00 km
- Coulombs-en-Valois0.00 km
- Ronchères0.00 km
- Coincy0.00 km
- La Croix-sur-Ourcq0.00 km
- Montigny-l'Allier0.00 km
- Oulchy-la-Ville0.00 km
- Oigny-en-Valois0.00 km
- Villers-Cotterêts0.00 km
- La Villeneuve-sous-Thury0.00 km
- Marolles0.00 km
- Varinfroy0.00 km
- Congis-sur-Thérouanne0.00 km
- Faverolles0.00 km
3 intersecting protected areas
Boucles de la Marne
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Marais De Bourneville
IUCN IVBiotope Protection Order
le marais de bourneville
IUCN IVLand acquired by a regional conservatory of natural areas
1 page = 1 named river (aggregation of 17 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
1 066 distinct species · 6 017 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 L'Ourcq : 31 espèces reliées par 92 interactions GloBI sur 5 types (connectance 13.1%, filtre Serrano α=0.2). 7 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
80km
Max discharge
7,2m³/s
Max Strahler
3
Segments matched
17
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.