HydroBASINS lev08 watershed · #2080474330
Bassin de l'Hozain
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 2 administrative regions : Aube, Yonne
Sub-basin area
306,4km²
Upstream area
2 870,9km²
Discharge
21,89m³/s
Mean elev.
164m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de la Sarce188 km²
- Bassin de l'Arce170 km²
2 dept-equivalent regions (GADM L2)
- 300.9 km²97.9% of basin
- 6.4 km²2.1% of basin
52 communes (GADM L5)Available for FRA, RWA
- Rumilly-lès-Vaudes39.91 km²93% commune
- Lantages16.15 km²85% commune
- Balnot-la-Grange13.69 km²67% commune
- Clérey13.27 km²67% commune
- Jully-sur-Sarce12.30 km²40% commune
- Saint-Thibault11.53 km²100% commune
- Cormost11.32 km²100% commune
- La Vendue-Mignot9.73 km²94% commune
- Montceaux-lès-Vaudes9.62 km²100% commune
- Chappes8.77 km²90% commune
- Pargues8.50 km²61% commune
- Villemoyenne8.28 km²67% commune
- Fouchères8.21 km²100% commune
- Verrières7.94 km²81% commune
- Vaudes7.86 km²100% commune
- Jeugny7.17 km²44% commune
- Praslin6.64 km²57% commune
- Les Loges-Margueron6.45 km²20% commune
- Arthonnay6.31 km²24% commune
- Villemereuil5.85 km²79% commune
- Les Bordes-Aumont5.69 km²100% commune
- Villy-le-Bois5.59 km²100% commune
- Buchères5.00 km²69% commune
- Saint-Jean-de-Bonneval4.92 km²85% commune
- Lirey4.84 km²100% commune
- Maupas4.39 km²100% commune
- Javernant4.28 km²74% commune
- Villiers-le-Bois4.25 km²82% commune
- Longeville-sur-Mogne4.05 km²100% commune
- Vougrey3.76 km²98% commune
- Isle-Aumont3.65 km²100% commune
- Moussey3.47 km²48% commune
- Assenay3.46 km²100% commune
- Villy-le-Maréchal3.28 km²86% commune
- Saint-Parres-lès-Vaudes2.97 km²100% commune
- Machy2.82 km²100% commune
- Courtenot2.51 km²29% commune
- Virey-sous-Bar2.49 km²24% commune
- Rouilly-Saint-Loup2.32 km²21% commune
- Villery2.21 km²64% commune
- Crésantignes1.93 km²100% commune
- Bréviandes1.82 km²28% commune
- Villiers-sous-Praslin1.74 km²20% commune
- Chauffour-lès-Bailly1.34 km²7% commune
- Maisons-lès-Chaource1.23 km²21% commune
- Saint-Phal1.23 km²4% commune
- Bragelogne-Beauvoir1.00 km²4% commune
- Chaource0.97 km²3% commune
- Roncenay0.26 km²7% commune
- Fays-la-Chapelle0.22 km²41% commune
- Quincerot0.12 km²1% commune
- Fresnoy-le-Château0.01 km²0% commune
4 intersecting protected areas
Forêt D\'Orient
IUCN VRegional Nature Park
9.42 km² overlap
Etangs de la Champagne humide
IUCN Not ReportedWetland of International Importance (Ramsar Site)
8.53 km² overlap
Haut Tuileau
IUCN IaForest Integral Biological Reserve
1.27 km² overlap
prairie de la louvière
IUCN IVLand acquired by a regional conservatory of natural areas
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 092 distinct species · 170 192 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 l'Hozain : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 81 interactions GloBI sur 6 types (connectance 15.3%, filtre Serrano α=0.2). 9 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°
10,4°C
Annual rain
687mm
Moisture idx (CMI)
-0,19
Runoff
223mm/an
PET
847mm
AET
571mm
Mean slope
1,6°
Water table
117cm
Forest
17%
Crops
51%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)