Rivière· 5 segments

Bras de l'Oise

Crosses 2 administrative regions : Aisne, Val-d'Oise

rivière

Total length

29km

Max discharge

125,5m³/s

Max Strahler

Segments matched

River geography2 admin regions · 22 communes

Parent watershed

hybas-2080437720696 km²

2 administrative regions crossed (GADM L2)

Aisne
Hauts-de-France · France
14.8 km
in this dpt
Val-d'Oise
Île-de-France · France
1.1 km
in this dpt

22 communes (L5)For countries with L5

Ribemont5.68 km
Lesquielles-Saint-Germain2.89 km
Brissay-Choigny2.76 km
Macquigny2.15 km
Pontoise1.11 km
Mayot0.89 km
Vadencourt0.17 km
Vendeuil0.12 km
Travecy0.08 km
Brissy-Hamégicourt0.04 km
Châtillon-sur-Oise0.01 km
Saint-Ouen-l'Aumône0.00 km
Sissy0.00 km
Achery0.00 km
Origny-Sainte-Benoite0.00 km
Séry-lès-Mézières0.00 km
Thenelles0.00 km
Hauteville0.00 km
Noyales0.00 km
Proix0.00 km
Grand-Verly0.00 km
Ennery0.00 km

2 intersecting protected areas

Vexin Français
IUCN V
Regional Nature Park
les prairies inondables
IUCN IV
Land acquired by a regional conservatory of natural areas

1 page = 1 named river (aggregation of 5 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

834 distinct species · 11 801 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 39 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).

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bras de l'Oise : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 96 interactions GloBI sur 4 types (connectance 13.0%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.130

Patrimoniales

Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydrology (HydroRIVERS v10)