HydroBASINS lev08 watershed · #2080532110
Bassin de la Charente
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 1 administrative regions : Charente-Maritime
Sub-basin area
497km²
Upstream area
7 774,8km²
Discharge
132,71m³/s
Mean elev.
35m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de la Seugne934 km²
- Bassin de la Charente152 km²
1 dept-equivalent regions (GADM L2)
- 498.2 km²100.0% of basin
53 communes (GADM L5)Available for FRA, RWA
- Saint-Savinien43.47 km²92% commune
- Saintes36.51 km²79% commune
- Chaniers23.71 km²87% commune
- Port-d'Envaux21.83 km²100% commune
- Saint-Hilaire-de-Villefranche18.97 km²82% commune
- Le Douhet18.90 km²100% commune
- Écoyeux18.06 km²88% commune
- Plassay17.42 km²100% commune
- Saint-Porchaire16.95 km²100% commune
- Geay15.87 km²100% commune
- Taillebourg15.31 km²100% commune
- Bords14.41 km²94% commune
- Berneuil14.30 km²55% commune
- Romegoux13.91 km²100% commune
- Saint-Georges-des-Coteaux13.24 km²70% commune
- Les Gonds12.69 km²100% commune
- Fontcouverte11.77 km²100% commune
- Thénac11.30 km²58% commune
- Écurat10.74 km²100% commune
- Courcoury10.16 km²80% commune
- Bussac-sur-Charente10.16 km²100% commune
- Juicq9.20 km²100% commune
- La Chapelle-des-Pots9.20 km²88% commune
- Vénérand9.08 km²98% commune
- Fenioux8.89 km²93% commune
- Annepont8.72 km²100% commune
- Les Essards7.98 km²81% commune
- Saint-Sulpice-d'Arnoult7.39 km²46% commune
- Le Mung7.15 km²100% commune
- La Jard7.12 km²88% commune
- Beurlay6.59 km²66% commune
- Brizambourg6.31 km²28% commune
- Grandjean5.95 km²100% commune
- La Vallée5.67 km²34% commune
- Crazannes4.80 km²100% commune
- Saint-Vaize4.49 km²100% commune
- Chermignac4.17 km²31% commune
- Taillant3.97 km²81% commune
- Préguillac3.78 km²56% commune
- La Frédière2.69 km²100% commune
- Sainte-Radegonde1.11 km²10% commune
- Mazeray1.02 km²5% commune
- Archingeay0.80 km²5% commune
- Champdolent0.69 km²6% commune
- Nieul-lès-Saintes0.58 km²3% commune
- Colombiers0.44 km²6% commune
- Saint-Sever-de-Saintonge0.32 km²4% commune
- Pont-l'Abbé-d'Arnoult0.18 km²1% commune
- Bignay0.11 km²1% commune
- Soulignonne0.05 km²0% commune
- Asnières-la-Giraud0.03 km²0% commune
- Nantillé0.01 km²0% commune
- Saint-Léger0.00 km²0% commune
16 intersecting protected areas
Moyenne vallée de la Charente et Seugnes et Coran
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
39.69 km² overlap
Vallée de la Charente moyenne et Seugnes
IUCN Not ReportedSpecial Protection Area (Birds Directive)
39.69 km² overlap
Estuaire et basse vallée de la Charente
IUCN Not ReportedSpecial Protection Area (Birds Directive)
21.81 km² overlap
Vallée de la Charente (basse vallée)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
21.81 km² overlap
Carrières de Saint-Savinien
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.40 km² overlap
val de seugne
IUCN IVLand acquired by a regional conservatory of natural areas
0.45 km² overlap
Chaumes de Sechebec
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.40 km² overlap
chaumes de sechebec
IUCN IVLand acquired by a regional conservatory of natural areas
0.36 km² overlap
Chaumes De Sèchebec
IUCN IVBiotope Protection Order
0.36 km² overlap
7 more protected areassorted by overlap area
bois secs
IUCN IVLand acquired by a regional conservatory of natural areas
0.20 km² overlap
Carrière de Fief de Foye
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.17 km² overlap
vallee de la seugne
IUCN IVLand acquired by a regional conservatory of natural areas
0.16 km² overlap
Land acquired by a regional conservatory of natural areas
0.16 km² overlap
fief de foye
IUCN IVLand acquired by a regional conservatory of natural areas
0.03 km² overlap
court si peu les roches
IUCN IVLand acquired by a regional conservatory of natural areas
0.02 km² overlap
la tonnelle - la quine
IUCN IVLand acquired by a regional conservatory of natural areas
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 397 distinct species · 255 945 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 42 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 Charente : 36 espèces + 6 bulles famille, 83 interactions GloBI documentées sur 5 types (connectance 9.6%, filtre Serrano α=0.2). Les 6 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°
12,4°C
Annual rain
840mm
Moisture idx (CMI)
-0,05
Runoff
539mm/an
PET
881mm
AET
619mm
Mean slope
1,4°
Water table
76cm
Forest
4%
Crops
69%
Urban
6%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)