HydroBASINS lev08 watershed · #2080559270
Bassin du Lot
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, Cantal, Lozère
Sub-basin area
1 033,3km²
Upstream area
2 117,7km²
Discharge
33,53m³/s
Mean elev.
782m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin du Lot623 km²
- Bassin de la Colagne462 km²
3 dept-equivalent regions (GADM L2)
- 761.1 km²73.5% of basin
- 274.0 km²26.5% of basin
- 0.4 km²0.0% of basin
55 communes (GADM L5)Available for FRA, RWA
- La Canourgue99.42 km²95% commune
- Saint-Chély-d'Aubrac75.69 km²99% commune
- Aurelle-Verlac52.92 km²98% commune
- Condom-d'Aubrac46.36 km²100% commune
- Prades-d'Aubrac46.16 km²100% commune
- Montpeyroux36.84 km²60% commune
- Le Nayrac36.62 km²100% commune
- Castelnau-de-Mandailles36.46 km²100% commune
- Saint-Geniez-d'Olt35.60 km²100% commune
- Espalion34.85 km²94% commune
- Coubisou30.44 km²100% commune
- Saint-Côme-d'Olt29.98 km²100% commune
- Curières28.57 km²78% commune
- Saint-Laurent-d'Olt28.26 km²100% commune
- Sébrazac25.18 km²100% commune
- Pomayrols23.51 km²100% commune
- Saint-Germain-du-Teil22.41 km²100% commune
- Le Cayrol22.18 km²100% commune
- Trélans22.09 km²96% commune
- Lassouts21.35 km²68% commune
- Florentin-la-Capelle20.59 km²57% commune
- Golinhac20.37 km²62% commune
- Banassac17.90 km²100% commune
- Les Hermaux17.71 km²100% commune
- Estaing17.18 km²100% commune
- Sainte-Eulalie-d'Olt17.13 km²99% commune
- Les Salces16.66 km²36% commune
- Saint-Pierre-de-Nogaret16.20 km²100% commune
- La Capelle-Bonance13.83 km²100% commune
- La Tieule12.88 km²52% commune
- Bessuéjouls11.37 km²100% commune
- Bozouls10.70 km²15% commune
- Chanac9.95 km²14% commune
- Saint-Saturnin9.01 km²100% commune
- Campagnac8.07 km²19% commune
- Laval-du-Tarn7.82 km²21% commune
- Le Monastier-Pin-Moriès7.59 km²40% commune
- Canilhac7.27 km²100% commune
- Entraygues-sur-Truyère7.23 km²24% commune
- Campuac6.85 km²36% commune
- Saint-Georges-de-Lévéjac5.35 km²10% commune
- Rodelle5.30 km²10% commune
- Pierrefiche4.87 km²28% commune
- Saint-Saturnin-de-Lenne3.85 km²11% commune
- Saint-Martin-de-Lenne1.36 km²14% commune
- Nasbinals0.96 km²1% commune
- Gabriac0.95 km²4% commune
- Les Salelles0.44 km²4% commune
- Saint-Urcize0.40 km²1% commune
- Villecomtal0.28 km²2% commune
- Le Recoux0.18 km²1% commune
- Cruéjouls0.18 km²1% commune
- Saint-Bonnet-de-Chirac0.09 km²1% commune
- Laguiole0.04 km²0% commune
- Sainte-Enimie0.03 km²0% commune
9 intersecting protected areas
Aubrac
IUCN VRegional Nature Park
674.90 km² overlap
Plateau central de l'Aubrac aveyronnais
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
58.28 km² overlap
Grands Causses
IUCN VRegional Nature Park
56.05 km² overlap
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)
51.24 km² overlap
Plateau de l'Aubrac
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
20.16 km² overlap
Vallon de l'Urugne
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5.79 km² overlap
Tourbières D\'Aubrac
IUCN IVForest Managed Biological Reserve
3.85 km² overlap
National Park - Buffer zone/Area of adhesion
0.16 km² overlap
Gorges du Tarn et de la Jonte
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.05 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
6 464 distinct species · 357 567 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 Lot : 23 espèces reliées par 118 interactions GloBI sur 6 types (connectance 19.8%, filtre Serrano α=0.2). 12 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°
10,0°C
Annual rain
773mm
Moisture idx (CMI)
-0,14
Runoff
503mm/an
PET
906mm
AET
633mm
Mean slope
10,7°
Water table
474cm
Forest
57%
Crops
3%
Urban
0%
Protected
6%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)