HydroBASINS lev08 watershed · #2080525920
Bassin du Boiron
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 6 administrative regions across 2 countries : Ain, Genève, Haute-Savoie, Jura-North Vaudois, Morges +1
Sub-basin area
1 005,2km²
Upstream area
7 971,3km²
Discharge
260,4m³/s
Mean elev.
615m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin du Rhône1941 km²
- Bassin de la Dranse573 km²
6 dept-equivalent regions (GADM L2)
- Nyon349.8 km²34.7% of basin
- 324.1 km²32.2% of basin
- Morges146.2 km²14.5% of basin
- GenèveGenève · Switzerland104.7 km²10.4% of basin
- 72.0 km²7.1% of basin
- 11.0 km²1.1% of basin
48 communes (GADM L5)Available for FRA, RWA
- Lac Léman90.53 km²37% commune
- Divonne-les-Bains30.37 km²90% commune
- Sciez20.51 km²100% commune
- Bons-en-Chablais16.72 km²85% commune
- Allinges14.86 km²100% commune
- Ballaison12.92 km²100% commune
- Veigy-Foncenex12.08 km²94% commune
- Chens-sur-Léman11.37 km²100% commune
- Draillant10.57 km²100% commune
- Douvaine10.38 km²100% commune
- Massongy10.03 km²100% commune
- Thonon-les-Bains9.94 km²60% commune
- Vesancy9.63 km²92% commune
- Messery9.60 km²100% commune
- Orcier8.99 km²100% commune
- Fessy8.73 km²100% commune
- Brenthonne8.20 km²100% commune
- Perrignier7.82 km²100% commune
- Margencel7.74 km²100% commune
- Loisin7.73 km²100% commune
- Grilly7.50 km²100% commune
- Lyaud7.39 km²81% commune
- Excenevex6.79 km²100% commune
- Cervens6.10 km²100% commune
- Versonnex5.87 km²99% commune
- Lully4.95 km²100% commune
- Anthy-sur-Léman4.49 km²100% commune
- Gex4.18 km²13% commune
- Ferney-Voltaire3.65 km²82% commune
- Cessy3.63 km²55% commune
- Yvoire3.34 km²100% commune
- Saxel2.87 km²51% commune
- Ornex2.57 km²47% commune
- Machilly2.53 km²46% commune
- Prévessin-Moëns2.32 km²18% commune
- Sauverny1.85 km²100% commune
- Nernier1.73 km²100% commune
- Armoy1.50 km²31% commune
- Boëge0.90 km²6% commune
- Lullin0.88 km²7% commune
- Vailly0.64 km²3% commune
- Habère-Poche0.52 km²4% commune
- Burdignin0.35 km²4% commune
- Reyvroz0.22 km²2% commune
- Ségny0.22 km²6% commune
- Habère-Lullin0.19 km²2% commune
- Mijoux0.17 km²1% commune
- Saint-Cergues0.02 km²0% commune
30 intersecting protected areas
Haut-Jura
IUCN VRegional Nature Park
28.89 km² overlap
Le Noirmont
IUCN IVFederal Hunting Reserves
22.22 km² overlap
Rives du Lac Léman
IUCN Not ReportedWetland of International Importance (Ramsar Site)
15.22 km² overlap
Crêts du Haut-Jura
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
15.01 km² overlap
Crêts du haut-Jura
IUCN Not ReportedSpecial Protection Area (Birds Directive)
15.01 km² overlap
Haute Chaîne Du Jura
IUCN IVNational Nature Reserve
14.42 km² overlap
Lac Léman
IUCN Not ReportedSpecial Protection Area (Birds Directive)
12.40 km² overlap
Lac Léman
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
12.40 km² overlap
Pointe de Promenthoux (VD)
IUCN IVFederal Inventory of Reserves for Waterbirds and Migratory Birds of International and National Imp.
11.92 km² overlap
21 more protected areassorted by overlap area
Federal Inventory of Reserves for Waterbirds and Migratory Birds of International and National Imp.
6.42 km² overlap
Federal Inventory of Reserves for Waterbirds and Migratory Birds of International and National Imp.
6.35 km² overlap
Zones humides du Bas Chablais
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.58 km² overlap
Sur Champagne
IUCN IVFederal Inventory of Dry Grasslands and Pastures of National Importance
1.73 km² overlap
Gorges de Moinsel
IUCN Not AssignedPrivate Nature Reserves
1.49 km² overlap
Bois de Chênes, Lac Vert
IUCN IVFederal Inventory of Amphibian Spawning Areas of National Importance
1.31 km² overlap
Pré aux Veaux
IUCN IVFederal Inventory of Dry Grasslands and Pastures of National Importance
0.96 km² overlap
Bois de Porte, Les Dailles
IUCN IVFederal Inventory of Amphibian Spawning Areas of National Importance
0.96 km² overlap
Biotope Protection Order
0.94 km² overlap
Réserve forestière mixte du bois de Chênes
IUCN Not AssignedForest Reserves
0.90 km² overlap
Réserve forestière naturelle de Fin Château
IUCN Not AssignedForest Reserves
0.90 km² overlap
Domaine de guidou
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
0.85 km² overlap
Douves
IUCN IVFederal Inventory of Amphibian Spawning Areas of National Importance
0.80 km² overlap
La Dôle
IUCN IVFederal Inventory of Dry Grasslands and Pastures of National Importance
0.72 km² overlap
Federal Inventory of Amphibian Spawning Areas of National Importance
0.67 km² overlap
Combes Chappuis
IUCN IVFederal Inventory of Amphibian Spawning Areas of National Importance
0.66 km² overlap
Massif Des Voirons
IUCN IVBiotope Protection Order
0.62 km² overlap
Prés de Villette
IUCN IVFederal Inventory of Amphibian Spawning Areas of National Importance
0.62 km² overlap
Marais de la haute Versoix et de Brou
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.61 km² overlap
Grand Bataillard
IUCN IVFederal Inventory of Alluvial Zones of National Importance
0.59 km² overlap
Pointe à la Bise
IUCN IVFederal Inventory of Amphibian Spawning Areas of National Importance
0.55 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
14 904 distinct species · 1 884 760 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 Boiron : 28 espèces reliées par 138 interactions GloBI sur 5 types (connectance 16.0%, filtre Serrano α=0.2). 14 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°
8,9°C
Annual rain
1 059mm
Moisture idx (CMI)
0,20
Runoff
1 008mm/an
PET
815mm
AET
663mm
Mean slope
4,5°
Water table
124cm
Forest
42%
Crops
21%
Urban
27%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)