HydroBASINS lev08 watershed · #2080537360
Bassin du Né
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 : Charente, Charente-Maritime
Sub-basin area
706,3km²
Upstream area
706,3km²
Discharge
12,09m³/s
Mean elev.
82m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 626.0 km²88.4% of basin
- 82.0 km²11.6% of basin
90 communes (GADM L5)Available for FRA, RWA
- Condéon27.22 km²88% commune
- Pérignac25.61 km²100% commune
- Salles-d'Angles21.81 km²100% commune
- Nonac20.26 km²96% commune
- Barbezieux-Saint-Hilaire19.52 km²72% commune
- Saint-Bonnet18.20 km²100% commune
- Péreuil17.33 km²100% commune
- Berneuil16.55 km²100% commune
- Lignières-Sonneville16.44 km²100% commune
- Barret15.77 km²72% commune
- Touzac15.62 km²100% commune
- Criteuil-la-Magdeleine15.23 km²100% commune
- Segonzac14.99 km²43% commune
- Saint-Aulais-la-Chapelle14.61 km²100% commune
- Juillac-le-Coq14.50 km²100% commune
- Germignac14.23 km²100% commune
- Saint-Palais-du-Né14.10 km²100% commune
- Challignac13.77 km²100% commune
- Verrières12.94 km²100% commune
- Angeac-Champagne12.20 km²83% commune
- Saint-Martial-sur-Né12.17 km²100% commune
- Malaville11.90 km²90% commune
- Blanzac-Porcheresse10.99 km²100% commune
- Ars10.96 km²92% commune
- Bessac10.88 km²100% commune
- Chillac10.75 km²73% commune
- Bonneuil10.27 km²77% commune
- Salles-de-Barbezieux9.72 km²100% commune
- Lachaise9.55 km²100% commune
- Échebrune9.54 km²56% commune
- Poullignac8.96 km²100% commune
- Coulonges8.74 km²93% commune
- Saint-Eugène8.66 km²53% commune
- Vignolles8.54 km²100% commune
- Saint-Médard8.44 km²100% commune
- Cressac-Saint-Genis8.44 km²100% commune
- Bécheresse8.38 km²100% commune
- Aubeville8.34 km²100% commune
- Deviat8.33 km²97% commune
- Champagne-Vigny8.02 km²100% commune
- Mainfonds8.02 km²83% commune
- Ladiville7.45 km²100% commune
- Reignac7.42 km²34% commune
- Jurignac7.27 km²44% commune
- Châteaubernard7.24 km²55% commune
- Gimeux7.23 km²100% commune
- Saint-Preuil7.08 km²57% commune
- Saint-Fort-sur-le-Né7.05 km²100% commune
- Sainte-Souline6.97 km²95% commune
- Nonaville6.89 km²100% commune
- Merpins6.74 km²65% commune
- Passirac6.46 km²44% commune
- Brie-sous-Barbezieux6.30 km²100% commune
- Genté6.24 km²55% commune
- Celles6.12 km²100% commune
- Lonzac6.03 km²100% commune
- Cierzac5.31 km²100% commune
- Étriac5.25 km²58% commune
- Ambleville5.14 km²100% commune
- Saint-Léger4.42 km²100% commune
- Plassac-Rouffiac4.07 km²34% commune
- Voulgézac3.92 km²29% commune
- Oriolles3.80 km²21% commune
- Lagarde-sur-le-Né3.76 km²100% commune
- Archiac3.43 km²74% commune
- Jarnac-Champagne3.37 km²16% commune
- Angeduc3.15 km²100% commune
- Salignac-sur-Charente3.01 km²28% commune
- Viville2.78 km²100% commune
- Saint-Félix2.63 km²33% commune
- Aignes-et-Puypéroux2.51 km²19% commune
- Chadurie2.37 km²15% commune
- Guimps1.66 km²13% commune
- Sainte-Lheurine1.12 km²6% commune
- Châtignac0.70 km²7% commune
- Brossac0.54 km²3% commune
- Saint-Eutrope0.45 km²16% commune
- Courgeac0.43 km²2% commune
- Saint-Martial0.28 km²3% commune
- Pérignac0.25 km²1% commune
- Birac0.22 km²2% commune
- Montmoreau-Saint-Cybard0.16 km²1% commune
- Bouteville0.10 km²1% commune
- Éraville0.08 km²1% commune
- Claix0.03 km²0% commune
- Biron0.02 km²0% commune
- Chadenac0.01 km²0% commune
- Arthenac0.00 km²0% commune
- Gensac-la-Pallue0.00 km²0% commune
- Cognac0.00 km²0% commune
13 intersecting protected areas
Vallée du Né et ses principaux affluents
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
46.27 km² overlap
Landes de Touverac - Saint-Vallier
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.17 km² overlap
Côteaux du Montmorélien
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.22 km² overlap
marais du ne - mc
IUCN IVLand acquired by a regional conservatory of natural areas
0.21 km² overlap
Land acquired by a regional conservatory of natural areas
0.20 km² overlap
vallee de l\'arce - mc
IUCN IVLand acquired by a regional conservatory of natural areas
0.13 km² overlap
Land acquired by a regional conservatory of natural areas
0.11 km² overlap
moulin de lussaud - mc
IUCN IVLand acquired by a regional conservatory of natural areas
0.11 km² overlap
Vallée de la Charente moyenne et Seugnes
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.09 km² overlap
4 more protected areassorted by overlap area
Moyenne vallée de la Charente et Seugnes et Coran
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.09 km² overlap
marais du ne
IUCN IVLand acquired by a regional conservatory of natural areas
0.02 km² overlap
coteau du pont du macon - mc
IUCN IVLand acquired by a regional conservatory of natural areas
0.02 km² overlap
Vallées du Lary et du Palais
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
2 327 distinct species · 74 116 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 du Né : 27 espèces + 7 bulles famille, 95 interactions GloBI documentées sur 5 types (connectance 16.9%, filtre Serrano α=0.2). Les 7 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
12,2°C
Annual rain
878mm
Moisture idx (CMI)
-0,06
Runoff
538mm/an
PET
931mm
AET
654mm
Mean slope
2,4°
Water table
124cm
Forest
1%
Crops
83%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)