HydroBASINS lev08 watershed · #2080512240
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 3 administrative regions : Allier, Nièvre, Saône-et-Loire
Sub-basin area
825,2km²
Upstream area
14 688,3km²
Discharge
144,39m³/s
Mean elev.
256m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de la Besbre761 km²
- Bassin de la Vouzance646 km²
3 dept-equivalent regions (GADM L2)
- 386.6 km²46.7% of basin
- 240.5 km²29.1% of basin
- 200.2 km²24.2% of basin
44 communes (GADM L5)Available for FRA, RWA
- Beaulon64.67 km²100% commune
- Cronat61.52 km²100% commune
- Bourbon-Lancy55.84 km²100% commune
- Issy-l'Évêque51.19 km²71% commune
- Grury45.44 km²100% commune
- Paray-le-Frésil35.18 km²95% commune
- Gannay-sur-Loire32.80 km²100% commune
- La Nocle-Maulaix32.44 km²100% commune
- Cossaye32.26 km²62% commune
- Maltat31.99 km²100% commune
- Cressy-sur-Somme28.24 km²100% commune
- Vitry-sur-Loire28.01 km²100% commune
- Decize25.17 km²53% commune
- Tazilly24.76 km²98% commune
- Marly-sous-Issy22.03 km²100% commune
- Montambert19.89 km²76% commune
- Ternant19.63 km²100% commune
- Garnat-sur-Engièvre18.90 km²100% commune
- Saint-Seine18.19 km²100% commune
- Saint-Martin-des-Lais17.99 km²100% commune
- Saint-Hilaire-Fontaine17.21 km²73% commune
- Dompierre-sur-Besbre16.98 km²37% commune
- Mont16.42 km²100% commune
- Chalmoux16.20 km²42% commune
- Charrin15.53 km²60% commune
- Lamenay-sur-Loire11.51 km²100% commune
- Saint-Aubin-sur-Loire11.19 km²98% commune
- Devay9.58 km²76% commune
- Chevagnes8.10 km²16% commune
- Savigny-Poil-Fol7.60 km²43% commune
- Neuvy-Grandchamp6.13 km²12% commune
- La Chapelle-au-Mans5.82 km²21% commune
- Lesme5.09 km²100% commune
- Thiel-sur-Acolin4.12 km²7% commune
- Lucenay-lès-Aix3.60 km²6% commune
- Fléty2.62 km²13% commune
- Gilly-sur-Loire1.39 km²6% commune
- Diou1.26 km²5% commune
- Fours0.33 km²1% commune
- La Chapelle-aux-Chasses0.23 km²1% commune
- Luzy0.20 km²0% commune
- Uxeau0.10 km²0% commune
- Champvert0.04 km²0% commune
- Cuzy0.00 km²0% commune
22 intersecting protected areas
Val de Loire bocager
IUCN Not ReportedSpecial Protection Area (Birds Directive)
89.13 km² overlap
Sologne bourbonnaise
IUCN Not ReportedSpecial Protection Area (Birds Directive)
74.34 km² overlap
Val de Loire nivernais
IUCN Not ReportedSpecial Protection Area (Birds Directive)
40.45 km² overlap
Val de Loire bocager
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
35.34 km² overlap
Val de Loire nivernais
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
11.91 km² overlap
Loire Bourguignonne
IUCN IVRegional Nature Reserve
7.41 km² overlap
Bocage, forêts et milieux humides du Sud Morvan
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.64 km² overlap
rnr loire bourguignonne
IUCN IVLand acquired by a regional conservatory of natural areas
4.33 km² overlap
Landes sèches et milieux tourbeux du bois du Breuil
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.57 km² overlap
13 more protected areassorted by overlap area
Val De Loire Bourbonnais
IUCN IVRegional Nature Reserve
3.07 km² overlap
Morvan
IUCN VRegional Nature Park
2.72 km² overlap
meandre des germains
IUCN IVLand acquired by a regional conservatory of natural areas
1.16 km² overlap
Biotope Protection Order
1.00 km² overlap
ile des goupys
IUCN IVLand acquired by a regional conservatory of natural areas
0.70 km² overlap
ile de brain
IUCN IVLand acquired by a regional conservatory of natural areas
0.55 km² overlap
ile hocquet
IUCN IVLand acquired by a regional conservatory of natural areas
0.33 km² overlap
le bois coudant
IUCN IVLand acquired by a regional conservatory of natural areas
0.27 km² overlap
Étangs de Sologne bourbonnaise
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.17 km² overlap
hauts de greves de tinjat
IUCN IVLand acquired by a regional conservatory of natural areas
0.15 km² overlap
les sables
IUCN IVLand acquired by a regional conservatory of natural areas
0.06 km² overlap
le grand pre
IUCN IVLand acquired by a regional conservatory of natural areas
0.05 km² overlap
ile de la crevee
IUCN IVLand acquired by a regional conservatory of natural areas
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 207 distinct species · 279 844 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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 : 35 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 98 interactions GloBI sur 6 types (connectance 12.0%, filtre Serrano α=0.2). 6 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°
10,8°C
Annual rain
748mm
Moisture idx (CMI)
-0,13
Runoff
319mm/an
PET
862mm
AET
619mm
Mean slope
2,1°
Water table
152cm
Forest
4%
Crops
23%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)