HydroBASINS lev08 watershed · #2080511450
Bassin de la Braconne
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
241,5km²
Upstream area
1 551,2km²
Discharge
16,66m³/s
Mean elev.
412m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de la Celle151 km²
- Bassin de l'Arroux27 km²
2 dept-equivalent regions (GADM L2)
- 213.3 km²88.1% of basin
- 28.8 km²11.9% of basin
18 communes (GADM L5)Available for FRA, RWA
- La Grande-Verrière44.54 km²96% commune
- Saint-Léger-sous-Beuvray34.95 km²99% commune
- Laizy31.90 km²100% commune
- Saint-Prix27.26 km²81% commune
- La Comelle22.46 km²100% commune
- Poil19.13 km²71% commune
- Étang-sur-Arroux14.59 km²42% commune
- Brion13.62 km²81% commune
- Saint-Didier-sur-Arroux12.41 km²44% commune
- Glux-en-Glenne9.50 km²43% commune
- Monthelon7.56 km²31% commune
- Mesvres1.29 km²6% commune
- Broye0.84 km²3% commune
- La Celle-en-Morvan0.78 km²4% commune
- Autun0.68 km²1% commune
- Roussillon-en-Morvan0.43 km²1% commune
- Millay0.15 km²0% commune
- Larochemillay0.03 km²0% commune
5 intersecting protected areas
Morvan
IUCN VRegional Nature Park
197.37 km² overlap
Special Areas of Conservation (Habitats Directive)
4.29 km² overlap
Bocage, forêts et milieux humides du Sud Morvan
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.53 km² overlap
Tourbières Du Morvan
IUCN IVRegional Nature Reserve
0.00 km² overlap
la croisette
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
4 193 distinct species · 170 668 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Braconne : 23 espèces reliées par 124 interactions GloBI sur 6 types (connectance 19.7%, filtre Serrano α=0.2). 13 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°
10,1°C
Annual rain
809mm
Moisture idx (CMI)
0,02
Runoff
340mm/an
PET
789mm
AET
610mm
Mean slope
6,1°
Water table
351cm
Forest
25%
Crops
2%
Urban
0%
Protected
77%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)