HydroBASINS lev08 watershed · #2080467880
Bassin de l'Auzon
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, Marne
Sub-basin area
516,5km²
Upstream area
3 030,1km²
Discharge
24,48m³/s
Mean elev.
132m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de la Voire842 km²
- Bassin de l'Aube493 km²
2 dept-equivalent regions (GADM L2)
- 445.4 km²86.0% of basin
- 72.6 km²14.0% of basin
64 communes (GADM L5)Available for FRA, RWA
- Piney59.36 km²83% commune
- Val-d'Auzon26.14 km²96% commune
- Onjon21.90 km²99% commune
- Avant-lès-Ramerupt21.22 km²99% commune
- Margerie-Hancourt21.17 km²95% commune
- Brévonnes20.14 km²100% commune
- Rouilly-Sacey19.56 km²100% commune
- Somsois18.86 km²87% commune
- Chavanges17.93 km²59% commune
- Jasseines16.24 km²99% commune
- Nogent-sur-Aube15.78 km²100% commune
- Braux15.33 km²100% commune
- Radonvilliers13.67 km²59% commune
- Balignicourt13.22 km²99% commune
- Longsols12.69 km²100% commune
- Donnement11.33 km²100% commune
- Bouy-Luxembourg11.22 km²93% commune
- Aulnay10.71 km²99% commune
- Saint-Utin9.93 km²98% commune
- Pougy8.77 km²100% commune
- Géraudot8.73 km²55% commune
- Mesnil-Lettre8.63 km²100% commune
- Pars-lès-Chavanges8.55 km²100% commune
- Mathaux8.31 km²65% commune
- Yèvres-le-Petit7.82 km²97% commune
- Magnicourt7.66 km²100% commune
- Chapelaine7.52 km²85% commune
- Lignon7.33 km²100% commune
- Dosches7.22 km²35% commune
- Verricourt7.21 km²100% commune
- Amance6.82 km²29% commune
- Dommartin-le-Coq6.71 km²100% commune
- Coclois6.65 km²100% commune
- Saint-Léger-sous-Margerie6.47 km²100% commune
- Chaudrey5.62 km²41% commune
- Brillecourt5.55 km²100% commune
- Molins-sur-Aube5.50 km²86% commune
- Vendeuvre-sur-Barse4.04 km²8% commune
- Pel-et-Der3.85 km²28% commune
- Brandonvillers3.75 km²33% commune
- Arrembécourt2.48 km²32% commune
- Morembert2.02 km²77% commune
- Drosnay1.74 km²9% commune
- Blaincourt-sur-Aube1.73 km²28% commune
- Gigny-Bussy1.62 km²7% commune
- Montmorency-Beaufort1.59 km²16% commune
- Charmont-sous-Barbuise1.35 km²4% commune
- Courcelles-sur-Voire1.29 km²27% commune
- Chalette-sur-Voire1.26 km²23% commune
- Rosnay-l'Hôpital0.89 km²7% commune
- Saint-Chéron0.67 km²7% commune
- Ramerupt0.63 km²5% commune
- Mesnil-Sellières0.51 km²6% commune
- Vaucogne0.32 km²2% commune
- Luyères0.31 km²2% commune
- Lesmont0.29 km²3% commune
- Dampierre0.09 km²0% commune
- Dienville0.06 km²0% commune
- Assencières0.04 km²1% commune
- Corbeil0.03 km²0% commune
- Bétignicourt0.01 km²0% commune
- Précy-Notre-Dame0.01 km²0% commune
- Ortillon0.00 km²0% commune
- Les Rivières-Henruel0.00 km²0% commune
11 intersecting protected areas
Forêt D\'Orient
IUCN VRegional Nature Park
220.03 km² overlap
Etangs de la Champagne humide
IUCN Not ReportedWetland of International Importance (Ramsar Site)
208.19 km² overlap
Lacs de la forêt d'Orient
IUCN Not ReportedSpecial Protection Area (Birds Directive)
92.64 km² overlap
Forêt d'Orient
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
34.42 km² overlap
Forêts et clairières des bas-bois
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
15.36 km² overlap
Forêt D\'Orient
IUCN IVNational Nature Reserve
12.69 km² overlap
Massif de la foret d\'orient
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
4.11 km² overlap
Prairies et bois alluviaux de la basse vallée alluviale de l'Aube
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.68 km² overlap
etang de l\'emprunt
IUCN IVLand acquired by a regional conservatory of natural areas
0.04 km² overlap
2 more protected areassorted by overlap area
Pinède De Chaudrey
IUCN IVBiotope Protection Order
0.02 km² overlap
L\'Emprunt De Doches
IUCN IVBiotope Protection Order
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 354 distinct species · 241 331 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 l'Auzon : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 101 interactions GloBI sur 5 types (connectance 13.6%, filtre Serrano α=0.2). 11 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°
10,3°C
Annual rain
659mm
Moisture idx (CMI)
-0,22
Runoff
229mm/an
PET
843mm
AET
554mm
Mean slope
1,5°
Water table
102cm
Forest
9%
Crops
66%
Urban
0%
Protected
42%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)