HydroBASINS lev08 watershed · #2080503110
Bassin de l'Erdre
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 : Loire-Atlantique, Maine-et-Loire
Sub-basin area
1 018,5km²
Upstream area
1 018,7km²
Discharge
13,78m³/s
Mean elev.
44m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 828.0 km²81.1% of basin
- 193.3 km²18.9% of basin
52 communes (GADM L5)Available for FRA, RWA
- Freigné64.56 km²98% commune
- Nort-sur-Erdre64.20 km²94% commune
- Joué-sur-Erdre53.31 km²97% commune
- Vigneux-de-Bretagne52.02 km²98% commune
- Riaillé48.98 km²97% commune
- Sucé-sur-Erdre41.77 km²100% commune
- La Cornuaille39.15 km²89% commune
- Angrie38.52 km²93% commune
- Nantes37.12 km²56% commune
- Les Touches34.63 km²98% commune
- La Chapelle-sur-Erdre33.00 km²100% commune
- Grandchamps-des-Fontaines31.71 km²93% commune
- Carquefou31.23 km²72% commune
- Vritz30.76 km²92% commune
- Saint-Sulpice-des-Landes30.44 km²96% commune
- Treillières29.44 km²99% commune
- Saint-Mars-du-Désert29.41 km²96% commune
- Le Louroux-Béconnais29.25 km²44% commune
- Orvault27.64 km²100% commune
- Ligné27.54 km²60% commune
- Petit-Mars25.61 km²100% commune
- Trans-sur-Erdre22.83 km²100% commune
- Saint-Mars-la-Jaille20.18 km²100% commune
- Sautron17.78 km²100% commune
- Casson15.83 km²100% commune
- Le Pin14.35 km²57% commune
- Héric14.33 km²19% commune
- Bonnœuvre13.92 km²90% commune
- La Meilleraye-de-Bretagne13.45 km²47% commune
- Saint-Herblain12.04 km²41% commune
- Belligné9.26 km²28% commune
- Abbaretz7.35 km²12% commune
- Teillé7.22 km²25% commune
- Vern-d'Anjou7.01 km²19% commune
- Challain-la-Potherie6.35 km²13% commune
- Couëron5.54 km²11% commune
- Candé4.92 km²100% commune
- La Chapelle-Glain4.04 km²12% commune
- Grand-Auverné3.77 km²11% commune
- La Pouëze3.57 km²16% commune
- Saffré3.18 km²5% commune
- Mouzeil3.15 km²17% commune
- Le Cellier3.04 km²9% commune
- Saint-Étienne-de-Montluc2.51 km²4% commune
- Pannecé2.23 km²7% commune
- Notre-Dame-des-Landes1.02 km²3% commune
- Le Temple-de-Bretagne0.73 km²43% commune
- Fay-de-Bretagne0.70 km²1% commune
- Mauves-sur-Loire0.34 km²2% commune
- Cordemais0.20 km²1% commune
- Petit-Auverné0.19 km²1% commune
- Maumusson0.05 km²0% commune
11 intersecting protected areas
Marais de l'Erdre
IUCN Not ReportedSpecial Protection Area (Birds Directive)
27.52 km² overlap
Marais de l'Erdre
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
25.65 km² overlap
Forêt, étang de Vioreau et étang de la Provostière
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.82 km² overlap
Tourbière De Logné
IUCN IVBiotope Protection Order
1.10 km² overlap
Tourbière De Logné
IUCN IVRegional Nature Reserve
0.61 km² overlap
Estuaire de la Loire
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.57 km² overlap
Estuaire de la Loire
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.57 km² overlap
Biotope Protection Order
0.37 km² overlap
marais de l\'erdre
IUCN IVLand acquired by a regional conservatory of natural areas
0.03 km² overlap
2 more protected areassorted by overlap area
Biotope Protection Order
0.00 km² overlap
Biotope Protection Order
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
7 473 distinct species · 394 222 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 l'Erdre : 21 espèces reliées par 123 interactions GloBI sur 6 types (connectance 19.5%, filtre Serrano α=0.2). 15 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°
11,4°C
Annual rain
751mm
Moisture idx (CMI)
-0,09
Runoff
437mm/an
PET
830mm
AET
574mm
Mean slope
1,3°
Water table
92cm
Forest
3%
Crops
54%
Urban
11%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)