HydroBASINS lev08 watershed · #2080503120
Bassin de la Loire
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 : Loire-Atlantique, Maine-et-Loire
Sub-basin area
2 002,8km²
Upstream area
111 741,6km²
Discharge
948,08m³/s
Mean elev.
63m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin du Layon1082 km²
- Bassin de la Loire147 km²
2 dept-equivalent regions (GADM L2)
- 1196.5 km²59.6% of basin
- 811.8 km²40.4% of basin
129 communes (GADM L5)Available for FRA, RWA
- Jallais52.95 km²99% commune
- Mésanger50.12 km²100% commune
- Bécon-les-Granits47.43 km²100% commune
- Le Loroux-Bottereau45.16 km²100% commune
- Varades44.88 km²100% commune
- Couffé40.38 km²100% commune
- La Pommeraye39.55 km²100% commune
- Saint-Herblon37.55 km²100% commune
- Champtocé-sur-Loire37.35 km²100% commune
- Le Louroux-Béconnais36.80 km²56% commune
- Beaupréau36.03 km²100% commune
- Trémentines34.52 km²99% commune
- Saint-Julien-de-Concelles33.16 km²100% commune
- Le Cellier32.59 km²91% commune
- Le May-sur-Èvre32.12 km²100% commune
- Saint-Georges-sur-Loire31.87 km²92% commune
- Liré31.86 km²100% commune
- Le Fief-Sauvin29.02 km²94% commune
- Saint-Augustin-des-Bois27.61 km²100% commune
- Pannecé27.51 km²93% commune
- La Poitevinière26.74 km²97% commune
- Chaudron-en-Mauges25.95 km²100% commune
- Saint-Florent-le-Vieil25.26 km²100% commune
- Vallet25.05 km²43% commune
- Maumusson24.73 km²100% commune
- Belligné24.16 km²72% commune
- Le Landreau23.79 km²100% commune
- La Chapelle-Basse-Mer23.12 km²100% commune
- Oudon22.50 km²100% commune
- Saint-Pierre-Montlimart22.39 km²100% commune
- Teillé22.03 km²75% commune
- Andrezé21.63 km²100% commune
- Cholet21.33 km²24% commune
- La Rouxière21.05 km²100% commune
- Ancenis21.05 km²100% commune
- Saint-Rémy-en-Mauges21.05 km²96% commune
- Villemoisan21.00 km²100% commune
- Montjean-sur-Loire20.03 km²100% commune
- Haute-Goulaine19.94 km²96% commune
- Saint-Germain-des-Prés19.88 km²100% commune
- Drain19.83 km²100% commune
- La Chapelle-Saint-Sauveur19.26 km²100% commune
- La Salle-et-Chapelle-Aubry18.89 km²100% commune
- Landemont18.76 km²100% commune
- Saint-Laurent-des-Autels18.75 km²100% commune
- Saint-Macaire-en-Mauges18.73 km²68% commune
- Bouzillé18.63 km²100% commune
- Ligné18.13 km²40% commune
- Chalonnes-sur-Loire17.87 km²46% commune
- Le Mesnil-en-Vallée17.85 km²100% commune
- Nantes17.54 km²26% commune
- La Chapelle-Saint-Florent16.38 km²100% commune
- Le Fuilet15.76 km²100% commune
- Mouzeil15.58 km²83% commune
- Champtoceaux15.55 km²100% commune
- Botz-en-Mauges15.54 km²100% commune
- Vezins15.18 km²83% commune
- La Roche-Blanche15.14 km²100% commune
- Le Pin-en-Mauges15.12 km²89% commune
- Bégrolles-en-Mauges15.12 km²100% commune
- Mauves-sur-Loire14.71 km²98% commune
- Saint-Léger-des-Bois14.63 km²95% commune
- Saint-Laurent-du-Mottay14.53 km²100% commune
- Le Puiset-Doré14.06 km²61% commune
- La Varenne14.05 km²100% commune
- Montrelais13.77 km²100% commune
- La Chapelle-Heulin13.58 km²99% commune
- Thouaré-sur-Loire13.10 km²100% commune
- Basse-Goulaine13.08 km²94% commune
- La Remaudière13.05 km²99% commune
- Saint-Sigismond12.96 km²100% commune
- Barbechat12.31 km²100% commune
- Pouillé-les-Côteaux12.28 km²100% commune
- Anetz12.05 km²100% commune
- Carquefou11.97 km²28% commune
- Saint-Sauveur-de-Landemont11.82 km²100% commune
- Nuaillé11.71 km²86% commune
- Saint-Quentin-en-Mauges11.70 km²56% commune
- La Chapelle-Rousselin11.40 km²91% commune
- Saint-Sébastien-sur-Loire11.35 km²99% commune
- Sainte-Luce-sur-Loire11.34 km²100% commune
- Villedieu-la-Blouère10.84 km²76% commune
- Saint-Clément-de-la-Place10.75 km²33% commune
- La Jubaudière10.48 km²100% commune
- La Tourlandry10.09 km²52% commune
- Saint-Léger-sous-Cholet9.70 km²100% commune
- La Boissière-du-Doré9.55 km²100% commune
- Le Marillais9.41 km²100% commune
- La Chapelle-du-Genêt9.25 km²100% commune
- Saint-Christophe-la-Couperie8.18 km²100% commune
- Saint-Georges-des-Gardes7.59 km²28% commune
- La Séguinière7.44 km²24% commune
- Saint-Martin-du-Fouilloux7.38 km²51% commune
- Saint-Philbert-en-Mauges7.27 km²100% commune
- Saint-Géréon7.06 km²100% commune
- Ingrandes6.44 km²100% commune
- La Boissière-sur-Èvre5.90 km²100% commune
- Le Fresne-sur-Loire5.68 km²100% commune
- Beausse5.61 km²100% commune
- La Haie-Fouassière5.38 km²45% commune
- Bourgneuf-en-Mauges4.91 km²42% commune
- La Cornuaille4.83 km²11% commune
- La Renaudière4.30 km²20% commune
- Saint-Lambert-la-Potherie3.69 km²25% commune
- Chanteloup-les-Bois2.94 km²11% commune
- Montrevault2.66 km²100% commune
- La Chaussaire2.17 km²18% commune
- Saint-Laurent-de-la-Plaine1.82 km²9% commune
- Bonnœuvre1.56 km²10% commune
- Riaillé1.43 km²3% commune
- Le Pallet1.34 km²12% commune
- Freigné1.33 km²2% commune
- Saint-Mars-du-Désert1.23 km²4% commune
- La Possonnière0.99 km²5% commune
- Mazières-en-Mauges0.87 km²10% commune
- La Pouëze0.87 km²4% commune
- Les Touches0.83 km²2% commune
- Saint-André-de-la-Marche0.66 km²6% commune
- Vertou0.36 km²1% commune
- Chemillé0.29 km²1% commune
- Saint-Lézin0.29 km²2% commune
- La Regrippière0.24 km²1% commune
- Sainte-Christine0.17 km²2% commune
- Melay0.15 km²1% commune
- Saint-Mars-la-Jaille0.09 km²0% commune
- La Meignanne0.05 km²0% commune
- Trans-sur-Erdre0.03 km²0% commune
- Saint-Jean-de-Linières0.00 km²0% commune
- Neuvy-en-Mauges0.00 km²0% commune
24 intersecting protected areas
Vallée de la Loire de Nantes aux Ponts-de-Cé et ses annexes
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
125.64 km² overlap
Vallée de la Loire de Nantes aux Ponts-de-Cé et ses annexes
IUCN Not ReportedSpecial Protection Area (Birds Directive)
118.69 km² overlap
Marais de Goulaine
IUCN Not ReportedSpecial Protection Area (Birds Directive)
15.16 km² overlap
Marais de Goulaine
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
15.16 km² overlap
Biotope Protection Order
5.00 km² overlap
Estuaire de la Loire
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.91 km² overlap
Estuaire de la Loire
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.91 km² overlap
Landes Du Fuilet
IUCN IVBiotope Protection Order
0.49 km² overlap
Ferme De La Chauffetière
IUCN IVRegional Nature Reserve
0.30 km² overlap
15 more protected areassorted by overlap area
Land acquired by a regional conservatory of natural areas
0.23 km² overlap
Ilot Du Buisson Marion
IUCN IVBiotope Protection Order
0.22 km² overlap
Land acquired by a regional conservatory of natural areas
0.21 km² overlap
Land acquired by a regional conservatory of natural areas
0.12 km² overlap
Biotope Protection Order
0.11 km² overlap
Niveau à bois fossilisé au sein de la carrière de Chateaupanne et carrière tranchée du Petit Fourneau
IUCN Not ReportedGeotope Protection Order
0.09 km² overlap
Geotope Protection Order
0.09 km² overlap
Discordance de Pincourt
IUCN IVGeotope Protection Order
0.03 km² overlap
Discordance de Pincourt
IUCN Not ReportedGeotope Protection Order
0.03 km² overlap
Discordance du Petit Lapin
IUCN IVGeotope Protection Order
0.03 km² overlap
Discordance du Petit Lapin
IUCN Not ReportedGeotope Protection Order
0.03 km² overlap
Biotope Protection Order
0.01 km² overlap
Biotope Protection Order
0.00 km² overlap
Biotope Protection Order
0.00 km² overlap
Biotope Protection Order
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
7 581 distinct species · 710 421 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 de la Loire : 21 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 122 interactions GloBI sur 6 types (connectance 19.4%, 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°
11,4°C
Annual rain
725mm
Moisture idx (CMI)
-0,14
Runoff
380mm/an
PET
840mm
AET
571mm
Mean slope
1,5°
Water table
141cm
Forest
0%
Crops
57%
Urban
7%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)