HydroBASINS lev08 watershed · #2080563480
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 2 administrative regions : Lot, Lot-et-Garonne
Sub-basin area
164,2km²
Upstream area
10 419,5km²
Discharge
142,26m³/s
Mean elev.
135m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ruisseau de Saint-Matré366 km²
- Bassin de la Lémance248 km²
2 dept-equivalent regions (GADM L2)
- 142.4 km²86.6% of basin
- 22.1 km²13.4% of basin
23 communes (GADM L5)Available for FRA, RWA
- Trentels20.23 km²99% commune
- Saint-Georges15.78 km²100% commune
- Saint-Sylvestre-sur-Lot14.50 km²68% commune
- Mauroux13.46 km²82% commune
- Trémons13.41 km²100% commune
- Penne-d'Agenais11.92 km²25% commune
- Bourlens10.72 km²69% commune
- Montayral10.01 km²40% commune
- Condezaygues9.42 km²88% commune
- Thézac9.02 km²80% commune
- Sérignac7.58 km²40% commune
- Monségur6.35 km²56% commune
- Cazideroque6.02 km²49% commune
- Saint-Vite5.69 km²100% commune
- Monsempron-Libos3.79 km²42% commune
- Saint-Aubin1.98 km²11% commune
- Villeneuve-sur-Lot1.35 km²2% commune
- Dausse1.25 km²19% commune
- Lacapelle-Cabanac0.86 km²11% commune
- Fumel0.54 km²2% commune
- Masquières0.35 km²3% commune
- Floressas0.22 km²2% commune
- Tournon-d'Agenais0.05 km²0% commune
5 intersecting protected areas
Coteaux de Thézac et de Montayral
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.34 km² overlap
Coteaux du Boudouyssou et plateau de Lascrozes
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.19 km² overlap
coteaux de thezac
IUCN IVLand acquired by a regional conservatory of natural areas
0.99 km² overlap
pech de penne-d\'agenais
IUCN IVLand acquired by a regional conservatory of natural areas
0.01 km² overlap
Le Boudouyssou
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
2 468 distinct species · 25 984 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 : 29 espèces + 7 bulles famille, 88 interactions GloBI documentées sur 5 types (connectance 14.0%, filtre Serrano α=0.2). Les 7 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°
12,4°C
Annual rain
795mm
Moisture idx (CMI)
-0,20
Runoff
329mm/an
PET
991mm
AET
665mm
Mean slope
3,4°
Water table
196cm
Forest
1%
Crops
85%
Urban
3%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)