HydroBASINS lev08 watershed · #2080519790
Bassin de l'Arroux
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 : Nièvre, Saône-et-Loire
Sub-basin area
504,8km²
Upstream area
2 294,3km²
Discharge
25,04m³/s
Mean elev.
316m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de la Braconne242 km²
- Bassin du Mesvrin238 km²
2 dept-equivalent regions (GADM L2)
- 505.8 km²100.0% of basin
- 0.2 km²0.0% of basin
33 communes (GADM L5)Available for FRA, RWA
- Rigny-sur-Arroux46.74 km²97% commune
- Toulon-sur-Arroux41.87 km²96% commune
- La Tagnière34.04 km²99% commune
- Uxeau32.74 km²100% commune
- Saint-Eugène31.68 km²90% commune
- Montmort31.37 km²100% commune
- Gueugnon28.82 km²100% commune
- Sainte-Radegonde23.13 km²100% commune
- Dettey22.56 km²100% commune
- Charbonnat21.60 km²97% commune
- La Chapelle-au-Mans16.54 km²59% commune
- Vendenesse-sur-Arroux16.05 km²100% commune
- Saint-Didier-sur-Arroux15.17 km²54% commune
- Étang-sur-Arroux14.38 km²41% commune
- Marly-sur-Arroux13.97 km²54% commune
- La Boulaye13.90 km²100% commune
- Thil-sur-Arroux13.17 km²100% commune
- Clessy12.35 km²73% commune
- Issy-l'Évêque11.59 km²16% commune
- Saint-Berain-sous-Sanvignes10.93 km²24% commune
- Saint-Nizier-sur-Arroux10.28 km²100% commune
- Chassy8.18 km²62% commune
- Curdin7.99 km²100% commune
- La Chapelle-sous-Uchon6.91 km²41% commune
- Neuvy-Grandchamp6.11 km²12% commune
- Uchon4.69 km²39% commune
- La Motte-Saint-Jean3.00 km²14% commune
- Digoin2.95 km²8% commune
- Cuzy2.73 km²15% commune
- Saint-Romain-sous-Versigny0.27 km²2% commune
- Luzy0.24 km²1% commune
- Charmoy0.10 km²0% commune
- Grury0.03 km²0% commune
5 intersecting protected areas
Morvan
IUCN VRegional Nature Park
188.38 km² overlap
les grandes combes
IUCN IVLand acquired by a regional conservatory of natural areas
0.48 km² overlap
montagne de la chaine
IUCN IVLand acquired by a regional conservatory of natural areas
0.15 km² overlap
Bocage, forêts et milieux humides du Sud Morvan
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.13 km² overlap
les rochers du carnaval
IUCN IVLand acquired by a regional conservatory of natural areas
0.09 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 931 distinct species · 109 698 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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'Arroux : 27 espèces + 5 bulles famille, 54 interactions GloBI documentées sur 4 types (connectance 10.9%, filtre Serrano α=0.2). Les 5 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°
10,6°C
Annual rain
769mm
Moisture idx (CMI)
-0,07
Runoff
344mm/an
PET
829mm
AET
617mm
Mean slope
4,0°
Water table
289cm
Forest
8%
Crops
8%
Urban
1%
Protected
17%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)