Ruisseau· 8 segments
Le Lez
Crosses 1 administrative regions : Ariège
Total length
141km
Max discharge
4,9m³/s
Max Strahler
3
Segments matched
8
River geography1 admin regions · 16 communes
1 administrative regions crossed (GADM L2)
- AriègeOccitanie · France27.3 kmin this dpt
16 communes (L5)For countries with L5
- Sentein9.04 km
- Balaguères4.44 km
- Les Bordes-sur-Lez3.73 km
- Audressein2.70 km
- Bonac-Irazein2.69 km
- Moulis1.84 km
- Engomer1.66 km
- Cescau1.15 km
- Arrout0.00 km
- Castillon-en-Couserans0.00 km
- Balacet0.00 km
- Salsein0.00 km
- Sor0.00 km
- Uchentein0.00 km
- Antras0.00 km
- Arrien-en-Bethmale0.00 km
5 intersecting protected areas
Pyrénées Ariégeoises
IUCN VRegional Nature Park
Vallée du Riberot et massif du Mont Valier
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Special Protection Area (Birds Directive)
Special Areas of Conservation (Habitats Directive)
Chars de Moulis et de Liqué, grotte d'Aubert, Soulane de Balaguères et de Sainte-Catherine, granges des vallées de Sour et d'Astien
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1 page = 1 named river (aggregation of 8 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
862 distinct species · 6 041 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Le Lez : 22 espèces reliées par 108 interactions GloBI sur 5 types (connectance 19.3%, filtre Serrano α=0.2). 12 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
141km
Max discharge
4,9m³/s
Max Strahler
3
Segments matched
8
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.