HydroBASINS lev08 watershed · #2080493510
Bassin du Loir
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 : Indre-et-Loire, Loir-et-Cher, Maine-et-Loire, Sarthe
Sub-basin area
2 710,9km²
Upstream area
8 210,7km²
Discharge
49,75m³/s
Mean elev.
84m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin du Loir1999 km²
- Bassin de la Braye847 km²
4 dept-equivalent regions (GADM L2)
- 1443.4 km²53.1% of basin
- 643.2 km²23.7% of basin
- 570.9 km²21.0% of basin
- 61.1 km²2.2% of basin
167 communes (GADM L5)Available for FRA, RWA
- La Flèche79.97 km²100% commune
- Durtal61.87 km²100% commune
- Mayet53.75 km²100% commune
- Luché-Pringé49.25 km²100% commune
- Neuvy-le-Roi48.36 km²100% commune
- Saint-Paterne-Racan48.24 km²100% commune
- Le Lude46.63 km²100% commune
- Neuillé-Pont-Pierre37.67 km²96% commune
- Mansigné36.69 km²100% commune
- Pontvallain35.47 km²100% commune
- Genneteil35.45 km²97% commune
- Dissay-sous-Courcillon34.98 km²100% commune
- Savigné-sous-le-Lude33.99 km²100% commune
- Chemillé-sur-Dême33.90 km²100% commune
- La Chapelle-d'Aligné33.62 km²100% commune
- Aubigné-Racan32.67 km²100% commune
- Chenu31.90 km²100% commune
- Ruillé-sur-Loir31.30 km²78% commune
- Corzé31.00 km²99% commune
- Marçon30.80 km²100% commune
- Villiers-au-Bouin30.59 km²100% commune
- Cheviré-le-Rouge30.53 km²83% commune
- Vaas30.45 km²100% commune
- Bazouges-sur-le-Loir30.06 km²100% commune
- Daumeray29.82 km²73% commune
- Saint-Jean-de-la-Motte29.80 km²92% commune
- Villedieu-le-Château29.53 km²100% commune
- Marigné-Laillé29.46 km²89% commune
- Villevêque29.34 km²100% commune
- Saint-Germain-d'Arcé28.84 km²100% commune
- Seiches-sur-le-Loir28.84 km²100% commune
- Les Hermites28.49 km²87% commune
- Thorée-les-Pins28.30 km²100% commune
- Vaulandry28.02 km²100% commune
- Sonzay27.56 km²57% commune
- Le Grand-Lucé27.24 km²99% commune
- Jupilles26.74 km²100% commune
- Saint-Vincent-du-Lorouër26.60 km²100% commune
- Tresson26.50 km²91% commune
- Clefs26.01 km²100% commune
- Villaines-sous-Lucé25.54 km²99% commune
- Beaumont-Pied-de-Bœuf24.91 km²100% commune
- Chigné24.89 km²100% commune
- Courdemanche24.33 km²100% commune
- Fougeré24.27 km²100% commune
- Écommoy24.23 km²81% commune
- Lavernat23.19 km²100% commune
- Marray23.17 km²98% commune
- Chahaignes22.46 km²100% commune
- Dissé-sous-le-Lude22.36 km²100% commune
- Château-la-Vallière22.25 km²100% commune
- Marcé21.34 km²100% commune
- Épeigné-sur-Dême21.30 km²100% commune
- Broc21.16 km²100% commune
- Crosmières20.34 km²100% commune
- Pruillé-l'Éguillé20.34 km²97% commune
- Souvigné19.75 km²80% commune
- Couesmes19.70 km²100% commune
- Saint-Christophe-sur-le-Nais18.35 km²100% commune
- Lhomme18.31 km²100% commune
- Bueil-en-Touraine17.93 km²100% commune
- Thoiré-sur-Dinan17.82 km²100% commune
- Soucelles17.74 km²92% commune
- Flée17.73 km²100% commune
- Clermont-Créans17.64 km²99% commune
- Noyant17.47 km²59% commune
- Luceau17.46 km²100% commune
- Cré17.09 km²100% commune
- Saint-Pierre-du-Lorouër16.92 km²100% commune
- Chalonnes-sous-le-Lude16.45 km²100% commune
- Courcelles-de-Touraine15.89 km²63% commune
- Louestault15.71 km²98% commune
- Dénezé-sous-le-Lude15.15 km²100% commune
- Saint-Aubin-le-Dépeint14.94 km²100% commune
- Coulongé14.90 km²100% commune
- La Chapelle-aux-Choux14.66 km²100% commune
- Verneil-le-Chétif14.64 km²100% commune
- Meigné-le-Vicomte14.54 km²61% commune
- Le Bailleul14.45 km²52% commune
- Marcilly-sur-Maulne14.44 km²100% commune
- Montreuil-le-Henri14.44 km²100% commune
- Requeil14.39 km²100% commune
- Villaines-sous-Malicorne13.95 km²71% commune
- La Ferrière13.61 km²91% commune
- Baracé13.55 km²100% commune
- Beaumont-sur-Dême13.43 km²100% commune
- Saint-Laurent-de-Lin13.16 km²97% commune
- Jarzé12.69 km²39% commune
- Lublé12.67 km²100% commune
- Couture-sur-Loir12.66 km²87% commune
- Huillé12.59 km²100% commune
- Villebourg12.51 km²100% commune
- Beaumont-la-Ronce12.48 km²32% commune
- Château-du-Loir11.94 km²100% commune
- Mareil-sur-Loir11.94 km²100% commune
- Braye-sur-Maulne11.83 km²100% commune
- Montreuil-sur-Loir11.36 km²95% commune
- Saint-Pierre-de-Chevillé11.22 km²100% commune
- La Bruère-sur-Loir11.19 km²100% commune
- Brèches11.19 km²100% commune
- Saint-Georges-de-la-Couée11.03 km²96% commune
- Nogent-sur-Loir10.88 km²100% commune
- Sarcé10.84 km²100% commune
- La Chapelle-Saint-Laud10.45 km²100% commune
- Maisoncelles10.16 km²90% commune
- Lasse9.15 km²32% commune
- Lézigné8.85 km²100% commune
- Montigné-lès-Rairies8.80 km²100% commune
- Channay-sur-Lathan8.80 km²31% commune
- Montrouveau8.65 km²48% commune
- Sainte-Osmane8.60 km²71% commune
- Les Rairies8.54 km²100% commune
- La Chartre-sur-le-Loir8.49 km²100% commune
- Tiercé8.30 km²24% commune
- Beauvau8.09 km²100% commune
- Vouvray-sur-Loir7.94 km²100% commune
- Saint-Quentin-lès-Beaurepaire7.82 km²100% commune
- Château-l'Hermitage7.77 km²88% commune
- Montabon7.61 km²100% commune
- Précigné7.53 km²13% commune
- Saint-Biez-en-Belin7.43 km²79% commune
- Écouflant6.92 km²39% commune
- Poncé-sur-le-Loir6.41 km²94% commune
- Yvré-le-Pôlin6.41 km²29% commune
- Oizé5.94 km²35% commune
- Saint-Martin-d'Arcé5.90 km²43% commune
- Saint-Sylvain-d'Anjou5.81 km²26% commune
- Tréhet5.60 km²100% commune
- Briollay5.48 km²39% commune
- Rouziers-de-Touraine5.31 km²30% commune
- Monthodon4.27 km²12% commune
- Montpollin4.26 km²100% commune
- Saint-Laurent-en-Gâtines3.87 km²12% commune
- Bauné3.70 km²18% commune
- Évaillé3.50 km²18% commune
- Andard3.37 km²27% commune
- Lavenay3.36 km²47% commune
- Notre-Dame-du-Pé3.32 km²41% commune
- Pellouailles-les-Vignes3.18 km²100% commune
- Pontigné2.97 km²12% commune
- Bousse2.78 km²23% commune
- Semblançay2.78 km²8% commune
- Le Plessis-Grammoire2.62 km²28% commune
- Sougé2.17 km²13% commune
- Louailles1.98 km²19% commune
- Sarrigné1.40 km²43% commune
- Les Essarts1.29 km²31% commune
- Challes1.20 km²5% commune
- Bouloire1.16 km²4% commune
- Saint-Mars-de-Locquenay0.95 km²4% commune
- Chavaignes0.82 km²11% commune
- Brain-sur-l'Authion0.75 km²3% commune
- Chaumont-d'Anjou0.74 km²6% commune
- Les Hayes0.70 km²4% commune
- Méon0.64 km²4% commune
- La Fontaine-Saint-Martin0.62 km²5% commune
- Saint-Martin-des-Bois0.51 km²1% commune
- Ligron0.50 km²4% commune
- Soulaire-et-Bourg0.23 km²1% commune
- Saint-Antoine-du-Rocher0.21 km²1% commune
- Parigné-l'Évêque0.16 km²0% commune
- Auverse0.13 km²0% commune
- Échemiré0.08 km²0% commune
- Baugé0.08 km²1% commune
- Saint-Mars-d'Outillé0.07 km²0% commune
- Cléré-les-Pins0.01 km²0% commune
- Saint-Ouen-en-Belin0.00 km²0% commune
27 intersecting protected areas
Châtaigneraies à Osmoderma eremita au sud du Mans
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
46.48 km² overlap
Vallée du Loir de Vaas à Bazouges
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
42.42 km² overlap
Special Areas of Conservation (Habitats Directive)
23.13 km² overlap
Basses vallées angevines et prairies de la Baumette
IUCN Not ReportedSpecial Protection Area (Birds Directive)
22.84 km² overlap
Basses Vallées Angevines
IUCN Not ReportedWetland of International Importance (Ramsar Site)
20.44 km² overlap
Vallée du Narais, forêt de Bercé et ruisseau du Dinan
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
11.42 km² overlap
Loire-Anjou-Touraine
IUCN VRegional Nature Park
4.17 km² overlap
Complexe du Changeon et de la Roumer
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.33 km² overlap
Regional Nature Reserve
0.64 km² overlap
18 more protected areassorted by overlap area
Regional Nature Reserve
0.25 km² overlap
varennes de chevelu (les)
IUCN IVLand acquired by a regional conservatory of natural areas
0.19 km² overlap
Land acquired by a regional conservatory of natural areas
0.16 km² overlap
Land acquired by a regional conservatory of natural areas
0.13 km² overlap
La Gougeonniere
IUCN IVBiotope Protection Order
0.09 km² overlap
Regional Nature Reserve
0.06 km² overlap
Land acquired by a regional conservatory of natural areas
0.06 km² overlap
Land acquired by a regional conservatory of natural areas
0.04 km² overlap
Biotope Protection Order
0.04 km² overlap
Carrière du Brouillard
IUCN IVGeotope Protection Order
0.02 km² overlap
Carrière du Brouillard
IUCN Not ReportedGeotope Protection Order
0.02 km² overlap
Carrière du Hucheloup
IUCN IVGeotope Protection Order
0.02 km² overlap
Carrière du Hucheloup
IUCN Not ReportedGeotope Protection Order
0.02 km² overlap
Cave Des Herveaux A Jarze
IUCN IVBiotope Protection Order
0.01 km² overlap
Biotope Protection Order
0.01 km² overlap
Biotope Protection Order
0.00 km² overlap
Biotope Protection Order
0.00 km² overlap
Carrières souterraines de la Volonière
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
7 835 distinct species · 825 053 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 Loir : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 126 interactions GloBI sur 5 types (connectance 17.0%, 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°
11,2°C
Annual rain
684mm
Moisture idx (CMI)
-0,21
Runoff
205mm/an
PET
863mm
AET
571mm
Mean slope
1,7°
Water table
125cm
Forest
5%
Crops
48%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)