HydroBASINS lev08 watershed · #2080558290
Bassin de la Truyère
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 : Aveyron, Cantal
Sub-basin area
980,7km²
Upstream area
2 754,4km²
Discharge
41,68m³/s
Mean elev.
935m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin du Bès431 km²
- Bassin de Ruisseau des Ternes103 km²
2 dept-equivalent regions (GADM L2)
- 577.0 km²58.7% of basin
- 405.9 km²41.3% of basin
52 communes (GADM L5)Available for FRA, RWA
- Chaudes-Aigues54.50 km²100% commune
- Neuvéglise47.09 km²86% commune
- Cantoin44.36 km²100% commune
- Brommat44.32 km²100% commune
- Sainte-Geneviève-sur-Argence43.29 km²100% commune
- Brezons42.83 km²99% commune
- Lieutadès40.94 km²100% commune
- Thérondels39.25 km²100% commune
- Jabrun34.10 km²98% commune
- Oradour34.04 km²100% commune
- Cézens32.76 km²100% commune
- Saint-Symphorien-de-Thénières31.67 km²100% commune
- Malbo29.19 km²100% commune
- Lacalm26.53 km²100% commune
- Pierrefort24.57 km²100% commune
- Paulhenc23.85 km²100% commune
- Graissac22.92 km²100% commune
- Paulhac20.00 km²43% commune
- Mur-de-Barrez19.65 km²98% commune
- Saint-Martin-sous-Vigouroux19.20 km²100% commune
- Montézic19.14 km²100% commune
- Pailherols18.10 km²69% commune
- Sainte-Marie17.88 km²100% commune
- Lacroix-Barrez17.11 km²62% commune
- Lavastrie17.11 km²68% commune
- La Terrisse17.06 km²62% commune
- Espinasse16.71 km²100% commune
- La Trinitat16.71 km²96% commune
- Vitrac-en-Viadène16.64 km²100% commune
- Saint-Amans-des-Cots15.84 km²38% commune
- Saint-Martial14.59 km²100% commune
- Alpuech14.35 km²95% commune
- Saint-Hippolyte13.32 km²36% commune
- Narnhac10.68 km²100% commune
- Deux-Verges10.35 km²95% commune
- Anterrieux10.24 km²62% commune
- Gourdièges8.22 km²100% commune
- Huparlac8.17 km²34% commune
- Fridefont7.82 km²47% commune
- Maurines7.27 km²49% commune
- Lacapelle-Barrès6.40 km²100% commune
- Taussac5.68 km²14% commune
- Campouriez5.58 km²31% commune
- Cussac4.72 km²35% commune
- Saint-Urcize2.58 km²5% commune
- Alleuze2.49 km²10% commune
- Laguiole1.00 km²2% commune
- Albepierre-Bredons0.69 km²2% commune
- Saint-Rémy-de-Chaudes-Aigues0.60 km²4% commune
- Raulhac0.33 km²2% commune
- Saint-Jacques-des-Blats0.32 km²1% commune
- Laveissenet0.12 km²1% commune
14 intersecting protected areas
Aubrac
IUCN VRegional Nature Park
483.16 km² overlap
Volcans D\'Auvergne
IUCN VRegional Nature Park
218.12 km² overlap
Gorges de la Truyère
IUCN Not ReportedSpecial Protection Area (Birds Directive)
138.72 km² overlap
Gorges de la Truyère
IUCN Not ReportedSpecial Protection Area (Birds Directive)
135.78 km² overlap
Massif cantalien
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
18.58 km² overlap
Planèze de Saint Flour
IUCN Not ReportedSpecial Protection Area (Birds Directive)
15.91 km² overlap
Affluents rive droite de la Truyère amont
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
11.43 km² overlap
Monts et Plomb du Cantal
IUCN Not ReportedSpecial Protection Area (Birds Directive)
9.35 km² overlap
Aubrac
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5.39 km² overlap
5 more protected areassorted by overlap area
Haute vallée du Lot entre Espalion et Saint-Laurent-d'Olt et gorges de la Truyère, basse vallée du Lot et le Goul
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.91 km² overlap
Zones humides de la Planèze de Saint-Flour
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.38 km² overlap
Côteaux de Raulhac et Cros de Ronesque
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.28 km² overlap
Puy De La Tuile
IUCN IVForest Managed Biological Reserve
0.19 km² overlap
bois du siniq
IUCN IVLand acquired by a regional conservatory of natural areas
0.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 853 distinct species · 429 728 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 26 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 de la Truyère : 13 espèces reliées par 81 interactions GloBI sur 5 types (connectance 24.9%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
8,6°C
Annual rain
818mm
Moisture idx (CMI)
-0,04
Runoff
569mm/an
PET
849mm
AET
653mm
Mean slope
8,6°
Water table
461cm
Forest
35%
Crops
6%
Urban
0%
Protected
22%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)