Ruisseau· 10 segments

Le Gier

Crosses 3 administrative regions : Isère, Loire, Rhône

ruisseau

Total length

42km

Max discharge

4,4m³/s

Max Strahler

Segments matched

River geography3 admin regions · 26 communes

Parent watershed

hybas-2080539080425 km²

3 administrative regions crossed (GADM L2)

Loire
Auvergne-Rhône-Alpes · France
23.5 km
in this dpt
Rhône
Auvergne-Rhône-Alpes · France
10.3 km
in this dpt
Isère
Auvergne-Rhône-Alpes · France
0.0 km
in this dpt

26 communes (L5)For countries with L5

Saint-Chamond7.36 km
Givors5.39 km
Rive-de-Gier4.91 km
Saint-Romain-en-Gier3.52 km
L'Horme2.72 km
Lorette2.40 km
Tartaras2.16 km
La Grand-Croix2.10 km
La Valla-en-Gier0.86 km
Saint-Maurice-sur-Dargoire0.84 km
Châteauneuf0.77 km
Trèves0.45 km
Dargoire0.22 km
Saint-Jean-de-Touslas0.11 km
Ternay0.00 km
Cellieu0.00 km
Saint-Paul-en-Jarez0.00 km
Genilac0.00 km
Saint-Joseph0.00 km
Saint-Martin-la-Plaine0.00 km
Longes0.00 km
Chassagny0.00 km
Échalas0.00 km
Grigny0.00 km
Saint-Andéol-le-Château0.00 km
Chasse-sur-Rhône0.00 km

1 intersecting protected areas

Pilat
IUCN V
Regional Nature Park

1 page = 1 named river (aggregation of 10 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

1 506 distinct species · 16 753 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 37 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 Le Gier : 29 espèces + 8 bulles famille, 82 interactions GloBI documentées sur 6 types (connectance 12.3%, filtre Serrano α=0.2). Les 8 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées

Interactions affichées

Connectance

0.123

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)