HydroBASINS lev08 watershed · #2080548120
Bassin de la Desges
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 3 administrative regions : Cantal, Haute-Loire, Lozère
Sub-basin area
550,1km²
Upstream area
1 837,7km²
Discharge
23,46m³/s
Mean elev.
944m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de l'Ance233 km²
- Bassin de l'Allier154 km²
3 dept-equivalent regions (GADM L2)
- 519.3 km²94.2% of basin
- 22.0 km²4.0% of basin
- 10.1 km²1.8% of basin
42 communes (GADM L5)Available for FRA, RWA
- Saugues67.87 km²85% commune
- Mazeyrat-d'Allier44.81 km²97% commune
- Siaugues-Sainte-Marie40.82 km²100% commune
- Venteuges39.28 km²100% commune
- Grèzes34.55 km²99% commune
- Langeac30.55 km²88% commune
- Auvers21.16 km²100% commune
- La Besseyre-Saint-Mary21.12 km²100% commune
- Vissac-Auteyrac17.60 km²100% commune
- Pébrac17.46 km²100% commune
- Desges16.80 km²99% commune
- Saint-Arcons-d'Allier16.44 km²100% commune
- Paulhac-en-Margeride16.03 km²100% commune
- Chanteuges15.89 km²100% commune
- Saint-Bérain13.50 km²100% commune
- Monistrol-d'Allier13.27 km²48% commune
- Cubelles12.16 km²100% commune
- Clavières10.09 km²22% commune
- Charraix9.91 km²100% commune
- Pinols9.89 km²28% commune
- Tailhac9.71 km²80% commune
- Saint-Privat-d'Allier8.73 km²29% commune
- Saint-Julien-des-Chazes6.89 km²100% commune
- Sainte-Eugénie-de-Villeneuve5.85 km²95% commune
- Cerzat5.66 km²56% commune
- Chanaleilles5.43 km²11% commune
- Fix-Saint-Geneys5.37 km²68% commune
- Prades5.14 km²100% commune
- Aubazat4.93 km²30% commune
- Chazelles4.84 km²100% commune
- Saint-Georges-d'Aurac4.34 km²24% commune
- Saint-Jean-de-Nay3.12 km²11% commune
- Saint-Privat-du-Fau2.99 km²13% commune
- Le Malzieu-Forain2.94 km²6% commune
- Esplantas1.83 km²18% commune
- Jax1.64 km²13% commune
- Saint-Privat-du-Dragon1.19 km²5% commune
- Le Vernet0.56 km²15% commune
- Varennes-Saint-Honorat0.39 km²3% commune
- Chilhac0.34 km²8% commune
- Vazeilles-Limandre0.25 km²2% commune
- Julianges0.01 km²0% commune
10 intersecting protected areas
Haut Val d'Allier
IUCN Not ReportedSpecial Protection Area (Birds Directive)
231.94 km² overlap
Gorges de l'Allier et affluents
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
63.45 km² overlap
Montagne de la Margeride
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
15.80 km² overlap
Livradois-Forez
IUCN VRegional Nature Park
8.20 km² overlap
Sommets du nord Margeride
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5.40 km² overlap
Sommets et versants orientaux de la Margeride
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.65 km² overlap
Val d'Allier / Vieille Brioude / Langeac
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.01 km² overlap
Marais de Limagne
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.08 km² overlap
Marais De Limagne
IUCN IVBiotope Protection Order
0.34 km² overlap
1 more protected areassorted by overlap area
Biotope Protection Order
0.21 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 265 distinct species · 201 792 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 22 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 Desges : 21 espèces + 1 bulle famille, 42 interactions GloBI documentées sur 1 type (connectance 18.2%, filtre Serrano α=0.2). Les 1 bulle regroupe 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°
8,2°C
Annual rain
742mm
Moisture idx (CMI)
-0,09
Runoff
362mm/an
PET
820mm
AET
604mm
Mean slope
8,9°
Water table
460cm
Forest
71%
Crops
6%
Urban
0%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)