HydroBASINS lev08 watershed · #2080552460
Bassin du Rhône
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 2 administrative regions : Ardèche, Drôme
Sub-basin area
107,7km²
Upstream area
54 048,3km²
Discharge
1 159,05m³/s
Mean elev.
248m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin du Doux625 km²
- Bassin de la Galaure463 km²
2 dept-equivalent regions (GADM L2)
- 58.6 km²54.3% of basin
- 49.3 km²45.7% of basin
25 communes (GADM L5)Available for FRA, RWA
- Mercurol19.87 km²93% commune
- Chantemerle-les-Blés14.00 km²91% commune
- Tournon-sur-Rhône13.03 km²61% commune
- Saint-Romain-de-Lerps7.58 km²53% commune
- Glun7.45 km²100% commune
- Mauves7.20 km²100% commune
- Plats6.86 km²41% commune
- La Roche-de-Glun5.45 km²43% commune
- Tain-l'Hermitage4.86 km²100% commune
- Larnage4.83 km²57% commune
- Bren4.83 km²45% commune
- Châteaubourg4.19 km²100% commune
- Cornas2.06 km²24% commune
- Chanos-Curson1.57 km²20% commune
- Saint-Jean-de-Muzols0.94 km²9% commune
- Claveyson0.85 km²5% commune
- Saint-Barthélemy-de-Vals0.73 km²4% commune
- Marsaz0.69 km²7% commune
- Crozes-Hermitage0.62 km²10% commune
- Érôme0.14 km²2% commune
- Bourg-lès-Valence0.06 km²0% commune
- Beaumont-Monteux0.05 km²0% commune
- Pont-de-l'Isère0.03 km²0% commune
- Chavannes0.02 km²0% commune
- Veaunes0.00 km²0% commune
2 intersecting protected areas
Affluents rive droite du Rhône
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
11.69 km² overlap
Massifs de Crussol, Soyons, Cornas-Chateaubourg
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 981 distinct species · 80 615 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Bassin du Rhône : 32 espèces + 6 bulles famille, 97 interactions GloBI documentées sur 5 types (connectance 13.8%, filtre Serrano α=0.2). Les 6 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).
Hydroclimate (BasinATLAS lev08)
Mean T°
11,7°C
Annual rain
837mm
Moisture idx (CMI)
-0,12
Runoff
392mm/an
PET
954mm
AET
678mm
Mean slope
6,2°
Water table
285cm
Forest
34%
Crops
40%
Urban
17%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)