HydroBASINS lev08 watershed · #2080529430
Bassin du Suran
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 : Ain, Jura, Saône-et-Loire
Sub-basin area
366,8km²
Upstream area
366,8km²
Discharge
8,89m³/s
Mean elev.
414m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 189.9 km²51.6% of basin
- 177.7 km²48.3% of basin
- 0.2 km²0.0% of basin
66 communes (GADM L5)Available for FRA, RWA
- Bohas-Meyriat-Rignat23.56 km²98% commune
- Chavannes-sur-Suran20.66 km²93% commune
- Villereversure17.26 km²100% commune
- Simandre-sur-Suran16.18 km²100% commune
- Gigny15.89 km²100% commune
- Cressia13.28 km²89% commune
- Neuville-sur-Ain12.89 km²64% commune
- Saint-Julien12.66 km²100% commune
- Druillat11.94 km²57% commune
- Saint-Martin-du-Mont10.86 km²40% commune
- Andelot-Morval10.52 km²100% commune
- Pimorin10.43 km²96% commune
- Loisia10.35 km²92% commune
- Bourcia10.14 km²92% commune
- Lains10.01 km²100% commune
- Germagnat9.22 km²99% commune
- Véria9.13 km²89% commune
- Ramasse8.63 km²89% commune
- Montfleur8.43 km²100% commune
- Corveissiat7.93 km²34% commune
- Louvenne7.69 km²100% commune
- Drom7.41 km²95% commune
- Montagna-le-Templier6.88 km²100% commune
- Val-d'Épy6.66 km²77% commune
- Montrevel6.50 km²100% commune
- Nantey6.41 km²98% commune
- Graye-et-Charnay6.26 km²98% commune
- Pouillat6.20 km²98% commune
- Villechantria5.84 km²100% commune
- Villeneuve-lès-Charnod5.43 km²79% commune
- Priay4.60 km²29% commune
- Varambon4.49 km²57% commune
- Treffort-Cuisiat4.17 km²11% commune
- Thoissia3.96 km²99% commune
- Senaud3.95 km²100% commune
- Pont-d'Ain3.54 km²32% commune
- Florentia3.14 km²100% commune
- La Balme-d'Épy3.01 km²100% commune
- Broissia2.93 km²100% commune
- Grand-Corent2.75 km²40% commune
- Hautecourt-Romanèche2.49 km²12% commune
- Monnetay2.23 km²93% commune
- Dessia1.98 km²46% commune
- Revonnas1.86 km²24% commune
- Aromas1.04 km²5% commune
- Rothonay0.88 km²7% commune
- L'Aubépin0.84 km²15% commune
- La Boissière0.80 km²16% commune
- Dramelay0.59 km²8% commune
- Charnod0.51 km²10% commune
- Nancuise0.41 km²8% commune
- Villette-sur-Ain0.34 km²2% commune
- Marigna-sur-Valouse0.27 km²3% commune
- Coligny0.26 km²1% commune
- Saint-Jean-d'Étreux0.23 km²6% commune
- Montagna-le-Reconduit0.22 km²4% commune
- Courmangoux0.22 km²1% commune
- Champagnat0.18 km²1% commune
- Rosay0.18 km²2% commune
- Valfin-sur-Valouse0.16 km²2% commune
- Poncin0.10 km²1% commune
- Jasseron0.07 km²0% commune
- Augisey0.06 km²1% commune
- Pressiat0.03 km²0% commune
- Meillonnas0.02 km²0% commune
- Nanc-lès-Saint-Amour0.01 km²0% commune
13 intersecting protected areas
Petite montagne du Jura
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
43.76 km² overlap
Petite montagne du Jura
IUCN Not ReportedSpecial Protection Area (Birds Directive)
43.76 km² overlap
Revermont et gorges de l'Ain
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5.76 km² overlap
Biotope Protection Order
4.02 km² overlap
La Dombes
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.97 km² overlap
La Dombes
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.97 km² overlap
La Dombes
IUCN Not ReportedWetland of International Importance (Ramsar Site)
1.97 km² overlap
Biotope Protection Order
0.40 km² overlap
Basse vallée de l'Ain, confluence Ain-Rhône
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.28 km² overlap
4 more protected areassorted by overlap area
Grotte De Hautecourt
IUCN IVNational Nature Reserve
0.10 km² overlap
Ruisseau De Sélignac
IUCN IVBiotope Protection Order
0.04 km² overlap
marais des hautes rossettes
IUCN IVLand acquired by a regional conservatory of natural areas
0.01 km² overlap
Special Areas of Conservation (Habitats Directive)
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
5 262 distinct species · 234 403 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Suran : 19 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 112 interactions GloBI sur 6 types (connectance 16.8%, filtre Serrano α=0.2). 18 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°
10,0°C
Annual rain
941mm
Moisture idx (CMI)
0,09
Runoff
765mm/an
PET
850mm
AET
670mm
Mean slope
7,1°
Water table
316cm
Forest
63%
Crops
3%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)