HydroBASINS lev08 watershed · #2080478640
Bassin de la Cléry
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 : Loiret, Seine-et-Marne, Yonne
Sub-basin area
293,5km²
Upstream area
293,6km²
Discharge
1,96m³/s
Mean elev.
148m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 239.6 km²81.4% of basin
- 54.7 km²18.6% of basin
- 0.0 km²0.0% of basin
30 communes (GADM L5)Available for FRA, RWA
- Courtenay46.49 km²92% commune
- Griselles27.93 km²93% commune
- Saint-Hilaire-les-Andrésis25.62 km²99% commune
- Ferrières-en-Gâtinais25.36 km²93% commune
- La Selle-sur-le-Bied22.15 km²93% commune
- Chuelles20.59 km²67% commune
- Piffonds15.89 km²66% commune
- Savigny-sur-Clairis15.85 km²97% commune
- Chantecoq15.80 km²100% commune
- Courtemaux12.35 km²100% commune
- Vernoy11.63 km²79% commune
- Mérinville10.78 km²89% commune
- Ervauville8.85 km²71% commune
- Saint-Loup-d'Ordon8.45 km²47% commune
- Louzouer8.24 km²73% commune
- Saint-Loup-de-Gonois6.22 km²100% commune
- Thorailles2.35 km²70% commune
- Égriselles-le-Bocage1.36 km²6% commune
- Foucherolles1.35 km²13% commune
- Triguères1.22 km²3% commune
- Chevannes1.18 km²10% commune
- Fontenay-sur-Loing1.10 km²11% commune
- Saint-Martin-d'Ordon0.86 km²8% commune
- Domats0.70 km²3% commune
- Montcorbon0.53 km²2% commune
- La Selle-en-Hermoy0.47 km²2% commune
- Dordives0.46 km²3% commune
- Paucourt0.40 km²2% commune
- Pers-en-Gâtinais0.16 km²2% commune
- Bransles0.02 km²0% commune
2 intersecting protected areas
Land acquired by a regional conservatory of natural areas
0.05 km² overlap
Sites à chauves-souris de l'est du Loiret
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
2 444 distinct species · 86 431 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Cléry : 29 espèces reliées par 99 interactions GloBI sur 6 types (connectance 16.6%, 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
667mm
Moisture idx (CMI)
-0,22
Runoff
211mm/an
PET
855mm
AET
561mm
Mean slope
1,1°
Water table
66cm
Forest
4%
Crops
64%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)