HydroBASINS lev08 watershed · #2080486080
Bassin de la Mauve de Saint-Ay
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 : Loiret
Sub-basin area
139,3km²
Upstream area
37 428,9km²
Discharge
354,67m³/s
Mean elev.
109m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin du Dhuy227 km²
- Bassin de la Loire222 km²
1 dept-equivalent regions (GADM L2)
- 139.7 km²100.0% of basin
17 communes (GADM L5)Available for FRA, RWA
- Chaingy21.47 km²100% commune
- Ingré19.48 km²92% commune
- Ormes18.14 km²100% commune
- Mareau-aux-Prés15.14 km²97% commune
- Bucy-Saint-Liphard13.81 km²76% commune
- Saint-Ay8.58 km²84% commune
- Boulay-les-Barres7.86 km²63% commune
- Saint-Hilaire-Saint-Mesmin7.49 km²52% commune
- La Chapelle-Saint-Mesmin6.18 km²70% commune
- Saran5.49 km²29% commune
- Cléry-Saint-André4.66 km²25% commune
- Mézières-lez-Cléry2.61 km²10% commune
- Gidy2.56 km²11% commune
- Meung-sur-Loire2.37 km²11% commune
- Huisseau-sur-Mauves1.98 km²5% commune
- Saint-Pryvé-Saint-Mesmin1.77 km²20% commune
- Cercottes0.15 km²1% commune
5 intersecting protected areas
Vallée de la Loire de Tavers à Belleville-sur-Loire
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5.36 km² overlap
Vallée de la Loire du Loiret
IUCN Not ReportedSpecial Protection Area (Birds Directive)
4.60 km² overlap
Saint-Mesmin
IUCN IVNational Nature Reserve
1.87 km² overlap
Protected perimeter around a national nature reserve
0.67 km² overlap
Biotope Protection Order
0.39 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 616 distinct species · 141 226 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 de la Mauve de Saint-Ay : 33 espèces + 5 bulles famille, 97 interactions GloBI documentées sur 5 types (connectance 13.8%, filtre Serrano α=0.2). Les 5 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°
10,8°C
Annual rain
636mm
Moisture idx (CMI)
-0,25
Runoff
215mm/an
PET
848mm
AET
537mm
Mean slope
0,6°
Water table
32cm
Forest
1%
Crops
43%
Urban
23%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)