HydroBASINS lev08 watershed · #2080570860
Bassin du Dourdou
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 3 administrative regions : Aveyron, Hérault, Tarn
Sub-basin area
805,8km²
Upstream area
805,8km²
Discharge
15,17m³/s
Mean elev.
588m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 767.1 km²95.0% of basin
- 32.9 km²4.1% of basin
- 7.4 km²0.9% of basin
42 communes (GADM L5)Available for FRA, RWA
- Saint-Affrique105.31 km²94% commune
- Cornus45.04 km²48% commune
- Montlaur41.67 km²100% commune
- Fondamente40.46 km²80% commune
- Camarès39.24 km²93% commune
- Vabres-l'Abbaye38.73 km²94% commune
- Brusque36.47 km²100% commune
- Saint-Jean-et-Saint-Paul36.12 km²94% commune
- Montagnol34.71 km²100% commune
- Murat-sur-Vèbre32.58 km²35% commune
- Saint-Félix-de-Sorgues31.26 km²100% commune
- Gissac31.03 km²100% commune
- Versols-et-Lapeyre27.51 km²100% commune
- Mélagues27.28 km²61% commune
- Marnhagues-et-Latour21.83 km²100% commune
- Calmels-et-le-Viala21.38 km²94% commune
- Saint-Beaulize20.82 km²100% commune
- Tauriac-de-Camarès18.71 km²77% commune
- Saint-Izaire16.78 km²49% commune
- Sylvanès16.70 km²100% commune
- Arnac-sur-Dourdou16.54 km²98% commune
- Fayet15.80 km²100% commune
- Sainte-Eulalie-de-Cernon11.29 km²24% commune
- Les Costes-Gozon9.52 km²47% commune
- Rebourguil9.04 km²26% commune
- Saint-Jean-d'Alcapiès8.50 km²100% commune
- Viala-du-Pas-de-Jaux7.60 km²40% commune
- Mounes-Prohencoux7.50 km²20% commune
- Peux-et-Couffouleux7.17 km²32% commune
- Saint-Rome-de-Tarn6.27 km²12% commune
- Belmont-sur-Rance5.40 km²12% commune
- Castanet-le-Haut5.25 km²19% commune
- Roquefort-sur-Soulzon4.71 km²28% commune
- Broquiès4.32 km²11% commune
- La Couvertoirade2.37 km²4% commune
- Cambon-et-Salvergues1.16 km²2% commune
- Ceilhes-et-Rocozels0.64 km²2% commune
- Les Rives0.34 km²1% commune
- Barre0.29 km²2% commune
- Tournemire0.02 km²0% commune
- Murasson0.00 km²0% commune
- Saint-Geniès-de-Varensal0.00 km²0% commune
13 intersecting protected areas
Grands Causses
IUCN VRegional Nature Park
766.64 km² overlap
Haut-Languedoc
IUCN VRegional Nature Park
40.74 km² overlap
Plateau et corniches du Guilhaumard
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
18.92 km² overlap
Cirques de Saint-Paul-des-Fonts et de Tournemire
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.40 km² overlap
Montagne de l'Espinouse et du Caroux
IUCN Not ReportedSpecial Protection Area (Birds Directive)
2.34 km² overlap
Devèzes de Lapanouse et du Viala-du-Pas-de-Jaux
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.72 km² overlap
Causse du Larzac
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.55 km² overlap
Causse du Larzac
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.55 km² overlap
Crêtes du Mont Marcou et des Monts de Mare
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.27 km² overlap
4 more protected areassorted by overlap area
Le Caroux et l'Espinouse
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.24 km² overlap
Le Caroux-Espinouse
IUCN IVNational Hunting and Wildlife Reserve
0.22 km² overlap
Espinouse
IUCN IVForest Managed Biological Reserve
0.03 km² overlap
boisement du devez
IUCN IVLand acquired by a regional conservatory of natural areas
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
5 222 distinct species · 137 612 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Dourdou : 29 espèces + 6 bulles famille, 68 interactions GloBI documentées sur 5 types (connectance 11.4%, 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
760mm
Moisture idx (CMI)
-0,21
Runoff
586mm/an
PET
961mm
AET
635mm
Mean slope
10,2°
Water table
424cm
Forest
68%
Crops
12%
Urban
1%
Protected
100%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)