HydroBASINS lev08 watershed · #2080521030
Bassin de la Vonne
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
440,9km²
Upstream area
440,9km²
Discharge
5,84m³/s
Mean elev.
158m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 264.3 km²59.8% of basin
- 177.8 km²40.2% of basin
37 communes (GADM L5)Available for FRA, RWA
- Celle-Lévescault42.09 km²98% commune
- Vasles32.24 km²36% commune
- Lusignan31.24 km²81% commune
- Jazeneuil30.39 km²96% commune
- Coulombiers27.81 km²98% commune
- Marçay26.92 km²87% commune
- Sanxay24.71 km²100% commune
- Chantecorps19.76 km²100% commune
- Ménigoute19.58 km²100% commune
- Vausseroux18.68 km²100% commune
- Rouillé17.58 km²34% commune
- Curzay-sur-Vonne15.61 km²97% commune
- Beaulieu-sous-Parthenay13.36 km²49% commune
- Cloué11.81 km²100% commune
- Fomperron11.61 km²65% commune
- Marigny-Chemereau11.57 km²100% commune
- Saint-Germier11.49 km²97% commune
- Saint-Martin-du-Fouilloux10.10 km²42% commune
- Vivonne8.51 km²20% commune
- Reffannes8.17 km²95% commune
- Coutières7.05 km²100% commune
- Vautebis7.04 km²100% commune
- Clavé4.56 km²23% commune
- Lavausseau4.36 km²17% commune
- Benassay3.92 km²9% commune
- Soudan3.77 km²16% commune
- Les Forges3.76 km²36% commune
- Exireuil2.55 km²12% commune
- Payré2.50 km²9% commune
- Béruges2.09 km²6% commune
- Saint-Lin2.07 km²18% commune
- La Chapelle-Montreuil1.80 km²7% commune
- Vouhé1.11 km²8% commune
- Fontaine-le-Comte1.04 km²5% commune
- Pamproux0.43 km²1% commune
- La Chapelle-Bertrand0.42 km²2% commune
- Saint-Sauvant0.34 km²1% commune
6 intersecting protected areas
ruisseau de macre
IUCN IVLand acquired by a regional conservatory of natural areas
0.41 km² overlap
Land acquired by a regional conservatory of natural areas
0.20 km² overlap
vallee de la vonne
IUCN IVLand acquired by a regional conservatory of natural areas
0.12 km² overlap
vallee de la longere
IUCN IVLand acquired by a regional conservatory of natural areas
0.10 km² overlap
Vallée du Magnerolles
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.07 km² overlap
Biotope Protection Order
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 180 distinct species · 68 821 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Vonne : 23 espèces reliées par 86 interactions GloBI sur 6 types (connectance 12.9%, filtre Serrano α=0.2). 14 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
787mm
Moisture idx (CMI)
-0,10
Runoff
392mm/an
PET
874mm
AET
607mm
Mean slope
1,4°
Water table
91cm
Forest
0%
Crops
53%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)