Rivière· 27 segments
Le Drac
Crosses 2 administrative regions : Hautes-Alpes, Isère
Total length
133km
Max discharge
147,5m³/s
Max Strahler
6
Segments matched
27
River geography2 admin regions · 60 communes
2 administrative regions crossed (GADM L2)
- IsèreAuvergne-Rhône-Alpes · France59.3 kmin this dpt
- Hautes-AlpesProvence-Alpes-Côte d'Azur · France27.9 kmin this dpt
60 communes (L5)For countries with L5
- Vif7.54 km
- Grenoble6.63 km
- Quet-en-Beaumont4.98 km
- Orcières4.73 km
- Mayres-Savel4.65 km
- Chabottes4.53 km
- Saint-Eusèbe-en-Champsaur4.38 km
- Monteynard3.58 km
- Chauffayer3.05 km
- Saint-Bonnet-en-Champsaur2.85 km
- Avignonet2.59 km
- Le Glaizil2.47 km
- Varces-Allières-et-Risset2.41 km
- Cordéac2.21 km
- Pellafol2.19 km
- Le Pont-de-Claix2.17 km
- La Salle-en-Beaumont1.93 km
- Marcieu1.93 km
- Saint-Martin-de-la-Cluze1.90 km
- Treffort1.82 km
- Claix1.75 km
- La Motte-Saint-Martin1.68 km
- Notre-Dame-de-Commiers1.53 km
- Saint-Firmin1.50 km
- Corps1.49 km
- Seyssins1.20 km
- Sinard1.16 km
- Échirolles1.06 km
- Sassenage0.92 km
- Le Noyer0.80 km
- Champoléon0.74 km
- Saint-Michel-de-Chaillol0.70 km
- La Fare-en-Champsaur0.68 km
- Saint-Sébastien0.57 km
- Buissard0.51 km
- Saint-Julien-en-Champsaur0.44 km
- Cornillon-en-Trièves0.35 km
- Lavars0.25 km
- Forest-Saint-Julien0.25 km
- Bénévent-et-Charbillac0.23 km
- Saint-Jean-d'Hérans0.22 km
- Beaufin0.19 km
- Saint-Égrève0.19 km
- Ambel0.16 km
- Seyssinet-Pariset0.00 km
- Saint-Jean-Saint-Nicolas0.00 km
- Fontaine0.00 km
- Sainte-Luce0.00 km
- Laye0.00 km
- Saint-Pierre-de-Méaroz0.00 km
- Poligny0.00 km
- Les Côtes-de-Corps0.00 km
- Saint-Georges-de-Commiers0.00 km
- Saint-Laurent-du-Cros0.00 km
- Jarrie0.00 km
- Aspres-lès-Corps0.00 km
- Champagnier0.00 km
- Champ-sur-Drac0.00 km
- Saint-Arey0.00 km
- Saint-Martin-le-Vinoux0.00 km
7 intersecting protected areas
National Park - Buffer zone/Area of adhesion
Ecrins
IUCN IINational Park - Core Area
Chartreuse
IUCN VRegional Nature Park
Dévoluy - Durbon - Charance - Champsaur
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Massif de l'Obiou et gorges de la Souloise
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Isles Du Drac
IUCN IVRegional Nature Reserve
Colline De Comboire
IUCN IVBiotope Protection Order
1 page = 1 named river (aggregation of 27 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
2 461 distinct species · 83 511 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 20 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 Drac : 19 espèces + 1 bulle famille, 42 interactions GloBI documentées sur 3 types (connectance 22.1%, filtre Serrano α=0.2). Les 1 bulle regroupe 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
133km
Max discharge
147,5m³/s
Max Strahler
6
Segments matched
27
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.