HydroBASINS lev08 watershed · #2080562690
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 1 administrative regions : Lot-et-Garonne
Sub-basin area
139km²
Upstream area
10 804,3km²
Discharge
145,95m³/s
Mean elev.
113m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de la Tancanne246 km²
- Bassin du Lot164 km²
1 dept-equivalent regions (GADM L2)
- 139.3 km²100.0% of basin
16 communes (GADM L5)Available for FRA, RWA
- Villeneuve-sur-Lot51.68 km²63% commune
- Pujols24.68 km²100% commune
- Sainte-Colombe-de-Villeneuve13.16 km²68% commune
- Bias12.32 km²100% commune
- Saint-Sylvestre-sur-Lot6.68 km²32% commune
- Saint-Antoine-de-Ficalba6.03 km²54% commune
- Castella5.52 km²44% commune
- Lédat4.75 km²37% commune
- Casseneuil4.29 km²24% commune
- Allez-et-Cazeneuve3.74 km²33% commune
- Sainte-Livrade-sur-Lot3.33 km²11% commune
- Penne-d'Agenais1.71 km²4% commune
- Monbalen0.81 km²6% commune
- Hautefage-la-Tour0.43 km²2% commune
- Sembas0.14 km²1% commune
- La Croix-Blanche0.04 km²0% commune
3 intersecting protected areas
Coteaux du Boudouyssou et plateau de Lascrozes
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.02 km² overlap
coteau de castelmerle
IUCN IVLand acquired by a regional conservatory of natural areas
0.09 km² overlap
Le Boudouyssou
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 199 distinct species · 67 467 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 Lot : 28 espèces reliées par 127 interactions GloBI sur 6 types (connectance 18.1%, filtre Serrano α=0.2). 10 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°
12,4°C
Annual rain
788mm
Moisture idx (CMI)
-0,20
Runoff
308mm/an
PET
990mm
AET
660mm
Mean slope
3,8°
Water table
230cm
Forest
0%
Crops
83%
Urban
16%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)