HydroBASINS lev08 watershed · #2080524580
Bassin de l'Oignin
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 : Ain, Jura
Sub-basin area
334,5km²
Upstream area
2 103,2km²
Discharge
79,43m³/s
Mean elev.
681m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de l'Ain1115 km²
- Bassin de la Bienne690 km²
2 dept-equivalent regions (GADM L2)
- 316.1 km²94.3% of basin
- 19.3 km²5.7% of basin
46 communes (GADM L5)Available for FRA, RWA
- Oyonnax24.16 km²67% commune
- Izernore21.15 km²100% commune
- Saint-Martin-du-Frêne19.84 km²100% commune
- Vieu-d'Izenave19.46 km²99% commune
- Matafelon-Granges17.41 km²78% commune
- Nurieux-Volognat15.99 km²83% commune
- Nantua14.67 km²100% commune
- Samognat14.53 km²100% commune
- Apremont14.41 km²95% commune
- Aranc13.57 km²61% commune
- Montréal-la-Cluse12.92 km²100% commune
- Martignat12.68 km²100% commune
- Izenave11.07 km²84% commune
- Maillat11.06 km²100% commune
- Bellignat7.83 km²100% commune
- Coisia6.99 km²100% commune
- Lantenay6.58 km²100% commune
- Chevillard6.44 km²100% commune
- Les Neyrolles6.26 km²71% commune
- Groissiat6.12 km²100% commune
- Outriaz5.74 km²100% commune
- Peyriat5.23 km²85% commune
- Corcelles5.15 km²36% commune
- Dortan4.89 km²26% commune
- Brénod4.72 km²20% commune
- Brion4.54 km²100% commune
- Béard-Géovreissiat4.53 km²100% commune
- Condamine4.45 km²100% commune
- Port4.27 km²100% commune
- Vescles3.70 km²18% commune
- Thoirette3.49 km²40% commune
- Géovreisset3.32 km²97% commune
- Condes2.85 km²88% commune
- Sonthonnax-la-Montagne2.73 km²19% commune
- Cornod2.10 km²15% commune
- Échallon1.75 km²6% commune
- Le Poizat1.60 km²9% commune
- Corlier1.48 km²28% commune
- Labalme1.40 km²15% commune
- Ceignes1.21 km²11% commune
- Charix1.08 km²6% commune
- Arbent0.90 km²4% commune
- Hauteville-Lompnes0.77 km²2% commune
- Le Grand-Abergement0.17 km²1% commune
- Lavans-sur-Valouse0.12 km²1% commune
- Chancia0.01 km²0% commune
12 intersecting protected areas
Petite montagne du Jura
IUCN Not ReportedSpecial Protection Area (Birds Directive)
19.19 km² overlap
Petite montagne du Jura
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
19.19 km² overlap
Biotope Protection Order
11.59 km² overlap
Haut-Jura
IUCN VRegional Nature Park
4.96 km² overlap
Land acquired by a regional conservatory of natural areas
0.27 km² overlap
Revermont et gorges de l'Ain
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.21 km² overlap
Land acquired by a regional conservatory of natural areas
0.08 km² overlap
Vallées et côtes de la Bienne, du Tacon et du Flumen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.07 km² overlap
Vallées et côtes de la Bienne, du Tacon et du Flumen
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.07 km² overlap
3 more protected areassorted by overlap area
Land acquired by a regional conservatory of natural areas
0.02 km² overlap
clairieres du mackard
IUCN IVLand acquired by a regional conservatory of natural areas
0.01 km² overlap
marais sur les ormes
IUCN IVLand acquired by a regional conservatory of natural areas
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 633 distinct species · 306 195 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 30 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'Oignin : 17 espèces reliées par 99 interactions GloBI sur 5 types (connectance 22.8%, 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°
8,7°C
Annual rain
1 072mm
Moisture idx (CMI)
0,24
Runoff
896mm/an
PET
806mm
AET
678mm
Mean slope
10,5°
Water table
379cm
Forest
91%
Crops
5%
Urban
9%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)