Ruisseau· 22 segments
Le Gers
Crosses 4 administrative regions : Gers, Haute-Garonne, Hautes-Pyrénées, Lot-et-Garonne
Total length
180km
Max discharge
10,6m³/s
Max Strahler
3
Segments matched
22
River geography4 admin regions · 62 communes
4 administrative regions crossed (GADM L2)
- GersOccitanie · France67.6 kmin this dpt
- Hautes-PyrénéesOccitanie · France24.7 kmin this dpt
- Lot-et-GaronneNouvelle-Aquitaine · France13.2 kmin this dpt
- Haute-GaronneOccitanie · France0.0 kmin this dpt
62 communes (L5)For countries with L5
- Fleurance11.22 km
- Layrac6.52 km
- Astaffort6.20 km
- Lectoure5.88 km
- Roquelaure4.87 km
- Aries-Espénan4.66 km
- Montestruc-sur-Gers4.46 km
- Réjaumont3.65 km
- Pavie3.64 km
- Monléon-Magnoac3.20 km
- Masseube2.97 km
- Seissan2.97 km
- Castéra-Lectourois2.70 km
- Labarthe2.62 km
- Auterive2.57 km
- Orbessan2.57 km
- Gaussan2.49 km
- Pergain-Taillac2.40 km
- Sempesserre2.31 km
- Auch2.16 km
- Ornézan2.08 km
- Saint-Mézard1.95 km
- Sansan1.80 km
- Lalanne1.72 km
- Devèze1.71 km
- Uglas1.58 km
- Boucagnères1.50 km
- Monlong1.50 km
- Peyret-Saint-André1.43 km
- Lassales1.29 km
- Céran1.24 km
- Saint-Martin-de-Goyne1.23 km
- Tajan1.16 km
- Chélan1.14 km
- Pouy0.69 km
- Castelnau-Magnoac0.68 km
- Villemur0.57 km
- Puységur0.53 km
- Fals0.45 km
- Pouy-Loubrin0.42 km
- Castelnau-d'Arbieu0.29 km
- Gavarret-sur-Aulouste0.16 km
- Laran0.09 km
- Lasseube-Propre0.09 km
- Urdens0.07 km
- Boé0.07 km
- Brugnens0.00 km
- Traversères0.00 km
- Arné0.00 km
- Villeneuve-Lécussan0.00 km
- Cizos0.00 km
- Roquefort0.00 km
- Lécussan0.00 km
- Lalanne0.00 km
- Mont-d'Astarac0.00 km
- Durban0.00 km
- Sainte-Christie0.00 km
- Preignan0.00 km
- Montaut-les-Créneaux0.00 km
- Pauilhac0.00 km
- Sariac-Magnoac0.00 km
- Lagarde0.00 km
3 intersecting protected areas
La Garonne en Nouvelle-Aquitaine
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Garonne Et Section Du Lot
IUCN IVBiotope Protection Order
prairie du crabe
IUCN IVLand acquired by a regional conservatory of natural areas
1 page = 1 named river (aggregation of 22 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
1 739 distinct species · 18 279 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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 Gers : 37 espèces + 4 bulles famille, 92 interactions GloBI documentées sur 5 types (connectance 11.2%, filtre Serrano α=0.2). Les 4 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
180km
Max discharge
10,6m³/s
Max Strahler
3
Segments matched
22
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.