HydroBASINS lev08 watershed · #2080511490
Bassin du Mesvrin
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 : Saône-et-Loire
Sub-basin area
238,3km²
Upstream area
238,3km²
Discharge
2,69m³/s
Mean elev.
442m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
1 dept-equivalent regions (GADM L2)
- 238.9 km²100.0% of basin
19 communes (GADM L5)Available for FRA, RWA
- Saint-Symphorien-de-Marmagne37.41 km²100% commune
- Marmagne31.07 km²100% commune
- Broye27.65 km²97% commune
- Antully24.04 km²64% commune
- Mesvres22.04 km²94% commune
- Saint-Firmin15.19 km²95% commune
- Saint-Sernin-du-Bois14.92 km²100% commune
- Saint-Pierre-de-Varennes14.77 km²62% commune
- La Chapelle-sous-Uchon9.86 km²59% commune
- Saint-Émiland7.80 km²32% commune
- Autun7.57 km²12% commune
- Uchon6.37 km²53% commune
- Étang-sur-Arroux5.70 km²16% commune
- Le Creusot4.73 km²27% commune
- Charmoy3.41 km²9% commune
- Le Breuil2.60 km²9% commune
- Saint-Martin-de-Commune2.14 km²15% commune
- Montcenis1.25 km²10% commune
- Couches0.40 km²2% commune
2 intersecting protected areas
Morvan
IUCN VRegional Nature Park
78.89 km² overlap
foret de montmain
IUCN IVLand acquired by a regional conservatory of natural areas
0.16 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 399 distinct species · 94 852 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 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 Mesvrin : 20 espèces + 8 bulles famille, 68 interactions GloBI documentées sur 5 types (connectance 18.0%, filtre Serrano α=0.2). Les 8 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°
9,9°C
Annual rain
825mm
Moisture idx (CMI)
0,05
Runoff
355mm/an
PET
782mm
AET
614mm
Mean slope
6,2°
Water table
411cm
Forest
33%
Crops
5%
Urban
0%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)