HydroBASINS lev08 watershed · #2080502710
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 1 administrative regions : Indre-et-Loire
Sub-basin area
199,4km²
Upstream area
59 951,4km²
Discharge
525,94m³/s
Mean elev.
64m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de l'Indre3273 km²
- Bassin de la Loire16 km²
1 dept-equivalent regions (GADM L2)
- 200.0 km²100.0% of basin
21 communes (GADM L5)Available for FRA, RWA
- Saint-Benoît-la-Forêt30.18 km²86% commune
- Huismes23.67 km²100% commune
- La Chapelle-sur-Loire20.07 km²99% commune
- Saint-Patrice15.99 km²92% commune
- Restigné15.35 km²73% commune
- Rigny-Ussé13.93 km²100% commune
- Rivarennes11.77 km²62% commune
- Avoine11.38 km²93% commune
- Savigny-en-Véron10.99 km²50% commune
- Ingrandes-de-Touraine8.46 km²91% commune
- Chouzé-sur-Loire7.66 km²28% commune
- Saint-Michel-sur-Loire6.99 km²40% commune
- Bréhémont6.41 km²48% commune
- Chinon5.22 km²13% commune
- Beaumont-en-Véron3.73 km²20% commune
- Cravant-les-Côteaux3.28 km²8% commune
- Benais2.27 km²12% commune
- Bourgueil1.46 km²4% commune
- Langeais0.84 km²1% commune
- Cheillé0.29 km²1% commune
- Candes-Saint-Martin0.02 km²0% commune
20 intersecting protected areas
Loire-Anjou-Touraine
IUCN VRegional Nature Park
199.98 km² overlap
La Loire de Candes Saint Martin à Mosnes
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
18.38 km² overlap
Vallée de la Loire d'Indre-et-Loire
IUCN Not ReportedSpecial Protection Area (Birds Directive)
18.19 km² overlap
Lac de Rillé et forêts voisines d'Anjou et de Touraine
IUCN Not ReportedSpecial Protection Area (Birds Directive)
14.89 km² overlap
Basses vallées de la Vienne et de l'Indre
IUCN Not ReportedSpecial Protection Area (Birds Directive)
12.78 km² overlap
Complexe forestier de Chinon, landes du Ruchard
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.41 km² overlap
Complexe du Changeon et de la Roumer
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.03 km² overlap
Les puys du Chinonais
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.48 km² overlap
Puys Du Chinonais
IUCN IVBiotope Protection Order
0.31 km² overlap
11 more protected areassorted by overlap area
ile garaud (l\')
IUCN IVLand acquired by a regional conservatory of natural areas
0.25 km² overlap
iles de brehemont (les)
IUCN IVLand acquired by a regional conservatory of natural areas
0.21 km² overlap
ile de la bonde (l\')
IUCN IVLand acquired by a regional conservatory of natural areas
0.07 km² overlap
Amont De L\'Île Garaud
IUCN IVBiotope Protection Order
0.06 km² overlap
trotte loup
IUCN IVLand acquired by a regional conservatory of natural areas
0.04 km² overlap
Land acquired by a regional conservatory of natural areas
0.03 km² overlap
puy besnard (le)
IUCN IVLand acquired by a regional conservatory of natural areas
0.02 km² overlap
colline (la)
IUCN IVLand acquired by a regional conservatory of natural areas
0.00 km² overlap
caves de rigny-usse (les)
IUCN IVLand acquired by a regional conservatory of natural areas
0.00 km² overlap
Vallée de la Loire des Ponts-de-Cé à Montsoreau
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.00 km² overlap
Vallée de la Loire des Ponts-de-Cé à Montsoreau
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
5 238 distinct species · 290 788 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 139 interactions GloBI sur 5 types (connectance 18.8%, 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°
11,5°C
Annual rain
681mm
Moisture idx (CMI)
-0,22
Runoff
198mm/an
PET
877mm
AET
572mm
Mean slope
1,4°
Water table
129cm
Forest
30%
Crops
28%
Urban
0%
Protected
100%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)