HydroBASINS lev08 watershed · #2080561930
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 4 administrative regions : Aveyron, Cantal, Lot, Tarn-et-Garonne
Sub-basin area
1 119,3km²
Upstream area
7 394km²
Discharge
108,92m³/s
Mean elev.
339m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin du Dourdou de Conques631 km²
- Bassin de l'Auze247 km²
4 dept-equivalent regions (GADM L2)
- 701.9 km²62.6% of basin
- 412.5 km²36.8% of basin
- 6.9 km²0.6% of basin
- 0.4 km²0.0% of basin
103 communes (GADM L5)Available for FRA, RWA
- Martiel44.22 km²95% commune
- Villeneuve43.89 km²67% commune
- Limogne-en-Quercy33.10 km²100% commune
- Causse-et-Diège29.99 km²100% commune
- Firmi29.54 km²100% commune
- Aubin27.29 km²100% commune
- Cajarc25.46 km²100% commune
- Auzits24.49 km²100% commune
- Varaire23.13 km²89% commune
- Almont-les-Junies23.04 km²98% commune
- Salvagnac-Cajarc22.61 km²100% commune
- Saint-Jean-de-Laur22.52 km²100% commune
- Sainte-Croix21.95 km²85% commune
- Galgan20.87 km²100% commune
- Laramière19.93 km²92% commune
- Capdenac-Gare19.77 km²100% commune
- Larnagol19.11 km²79% commune
- Crégols18.84 km²100% commune
- Saint-Santin18.79 km²81% commune
- Saint-Parthem18.19 km²100% commune
- Calvignac17.45 km²100% commune
- Montbazens17.01 km²100% commune
- Asprières17.01 km²100% commune
- Cénevières15.72 km²100% commune
- Les Albres15.53 km²100% commune
- Lugagnac15.51 km²100% commune
- Drulhe15.06 km²84% commune
- Naussac14.82 km²100% commune
- Promilhanes14.69 km²100% commune
- Decazeville14.48 km²100% commune
- Vaureilles13.96 km²96% commune
- Peyrusse-le-Roc13.74 km²100% commune
- Salles-Courbatiès13.54 km²100% commune
- La Capelle-Balaguier13.46 km²100% commune
- Lugan12.96 km²100% commune
- Montsalès12.86 km²100% commune
- Flagnac12.72 km²100% commune
- Saujac12.52 km²100% commune
- Sonnac12.01 km²100% commune
- Saint-Martin-Labouval11.92 km²89% commune
- Saint-Cirq-Lapopie11.47 km²62% commune
- Balaguier-d'Olt11.26 km²100% commune
- Faycelles11.10 km²76% commune
- Ols-et-Rinhodes11.00 km²100% commune
- Livinhac-le-Haut10.90 km²100% commune
- Capdenac10.85 km²95% commune
- Escandolières10.84 km²81% commune
- Ambeyrac10.79 km²100% commune
- Noailhac9.85 km²63% commune
- Foissac9.62 km²100% commune
- Bach9.51 km²44% commune
- Tour-de-Faure9.39 km²100% commune
- Saint-Igest9.01 km²77% commune
- Saint-Chels8.96 km²50% commune
- Grand-Vabre8.78 km²30% commune
- Montbrun8.37 km²100% commune
- Bouillac7.96 km²100% commune
- Puyjourdes7.79 km²100% commune
- Gréalou7.51 km²42% commune
- Concots7.48 km²29% commune
- Beauregard7.35 km²49% commune
- Carayac6.84 km²100% commune
- Cransac6.73 km²100% commune
- Viviez6.36 km²100% commune
- Valzergues6.25 km²100% commune
- Saint-Félix6.10 km²77% commune
- Larroque-Toirac5.85 km²100% commune
- Saint-Pierre-Toirac5.58 km²100% commune
- Savignac5.44 km²35% commune
- Bournazel5.38 km²33% commune
- Lentillac-Saint-Blaise5.34 km²100% commune
- Felzins5.26 km²35% commune
- Cuzac5.15 km²100% commune
- Roussennac5.14 km²30% commune
- Cadrieu5.11 km²100% commune
- Figeac4.46 km²13% commune
- Boisse-Penchot4.35 km²100% commune
- Montredon4.16 km²35% commune
- Cabrerets3.88 km²9% commune
- Béduer3.58 km²14% commune
- Lunan3.52 km²56% commune
- Saint-Christophe-Vallon3.43 km²14% commune
- Sauliac-sur-Célé3.14 km²12% commune
- Frontenac2.78 km²100% commune
- Montmurat2.47 km²47% commune
- Vidaillac2.34 km²24% commune
- Cassaniouze2.24 km²6% commune
- Mourjou1.64 km²5% commune
- Saint-Cyprien-sur-Dourdou1.41 km²5% commune
- Saint-Jean-Mirabel1.19 km²13% commune
- Lanuéjouls0.56 km²5% commune
- Saillac0.45 km²3% commune
- Fournoulès0.42 km²6% commune
- Puylagarde0.37 km²2% commune
- Bouziès0.29 km²4% commune
- Marcilhac-sur-Célé0.22 km²1% commune
- Vailhourles0.20 km²1% commune
- Anglars-Saint-Félix0.18 km²1% commune
- Saint-Santin-de-Maurs0.13 km²1% commune
- Maleville0.11 km²0% commune
- Escamps0.09 km²1% commune
- Saint-Constant0.02 km²0% commune
- Goutrens0.01 km²0% commune
11 intersecting protected areas
Causses Du Quercy
IUCN VRegional Nature Park
316.82 km² overlap
Moyenne vallée du Lot inférieure
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
9.28 km² overlap
Lot
IUCN IIINational Nature Reserve
5.16 km² overlap
Puy de Wolf
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.24 km² overlap
Basse vallée du Célé
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.20 km² overlap
Tourbière du Rey
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.19 km² overlap
Vallées et côteaux thermophiles de la région de Maurs
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.06 km² overlap
Étangs du Ségala
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.02 km² overlap
Grotte de Fond d'Erbies
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.01 km² overlap
2 more protected areassorted by overlap area
Falaises lotoises (Rapaces)
IUCN IVBiotope Protection Order
0.00 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)
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
5 695 distinct species · 279 898 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 116 interactions GloBI sur 5 types (connectance 14.9%, filtre Serrano α=0.2). 15 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°
12,0°C
Annual rain
779mm
Moisture idx (CMI)
-0,20
Runoff
396mm/an
PET
980mm
AET
656mm
Mean slope
6,5°
Water table
336cm
Forest
35%
Crops
6%
Urban
2%
Protected
28%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)