HydroBASINS lev08 watershed · #2080516810
Bassin de l'Auxance
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 : Deux-Sèvres, Vienne
Sub-basin area
326,3km²
Upstream area
326,3km²
Discharge
3,23m³/s
Mean elev.
144m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 249.2 km²76.2% of basin
- 77.9 km²23.8% of basin
28 communes (GADM L5)Available for FRA, RWA
- Vasles40.17 km²44% commune
- Vouillé30.29 km²87% commune
- Ayron28.46 km²100% commune
- Migné-Auxances27.59 km²96% commune
- Quinçay26.69 km²90% commune
- Latillé23.80 km²95% commune
- Chalandray22.85 km²91% commune
- La Ferrière-en-Parthenay22.77 km²77% commune
- Chiré-en-Montreuil21.12 km²100% commune
- Cissé14.41 km²81% commune
- Saint-Martin-du-Fouilloux13.06 km²55% commune
- Maillé9.50 km²80% commune
- Vouneuil-sous-Biard9.30 km²36% commune
- Frozes8.15 km²87% commune
- Villiers7.41 km²66% commune
- Cherves6.08 km²23% commune
- Biard3.60 km²51% commune
- Chasseneuil-du-Poitou3.22 km²19% commune
- Poitiers3.16 km²7% commune
- Yversay1.43 km²25% commune
- Saurais1.09 km²9% commune
- Avanton1.01 km²10% commune
- Thénezay0.80 km²2% commune
- Benassay0.63 km²1% commune
- Lavausseau0.32 km²1% commune
- Montreuil-Bonnin0.10 km²0% commune
- Neuville-de-Poitou0.07 km²0% commune
- Béruges0.01 km²0% commune
7 intersecting protected areas
Plaines du Mirebalais et du Neuvillois
IUCN Not ReportedSpecial Protection Area (Birds Directive)
30.30 km² overlap
Ruisseau le Magot
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.40 km² overlap
Biotope Protection Order
0.78 km² overlap
le cormier vert
IUCN IVLand acquired by a regional conservatory of natural areas
0.19 km² overlap
vallee de l\'auxance
IUCN IVLand acquired by a regional conservatory of natural areas
0.15 km² overlap
carriere de puy herve
IUCN IVLand acquired by a regional conservatory of natural areas
0.03 km² overlap
chardonchamps
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
2 735 distinct species · 82 174 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 l'Auxance : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 133 interactions GloBI sur 6 types (connectance 18.9%, filtre Serrano α=0.2). 12 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°
11,3°C
Annual rain
750mm
Moisture idx (CMI)
-0,14
Runoff
313mm/an
PET
873mm
AET
597mm
Mean slope
1,2°
Water table
80cm
Forest
2%
Crops
65%
Urban
4%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)