HydroBASINS lev08 watershed · #2080568730
Bassin de la Cèze
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 4 administrative regions : Ardèche, Gard, Lozère, Vaucluse
Sub-basin area
1 357,3km²
Upstream area
1 357,3km²
Discharge
21,35m³/s
Mean elev.
303m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 1131.8 km²83.2% of basin
- 155.6 km²11.4% of basin
- 72.4 km²5.3% of basin
- 0.2 km²0.0% of basin
124 communes (GADM L5)Available for FRA, RWA
- Vialas48.92 km²99% commune
- Lussan47.07 km²100% commune
- Méjannes-le-Clap38.64 km²100% commune
- Barjac38.27 km²88% commune
- Sabran35.86 km²100% commune
- Bagnols-sur-Cèze31.26 km²100% commune
- Bouquet30.42 km²100% commune
- Goudargues30.25 km²100% commune
- Laudun-l'Ardoise27.48 km²81% commune
- Ponteils-et-Brésis27.03 km²100% commune
- Verfeuil26.17 km²100% commune
- Allègre-les-Fumades25.88 km²100% commune
- Saint-Sauveur-de-Cruzières24.74 km²100% commune
- Saint-Victor-la-Coste22.66 km²85% commune
- Montclus22.52 km²100% commune
- Malbosc21.95 km²100% commune
- Saint-André-de-Cruzières20.58 km²100% commune
- Orgnac-l'Aven19.81 km²93% commune
- Tresques17.96 km²100% commune
- Saint-Jean-de-Maruéjols-et-Avéja17.71 km²100% commune
- Génolhac17.66 km²100% commune
- Chamborigaud17.53 km²98% commune
- Malons-et-Elze17.07 km²54% commune
- Bessas16.87 km²100% commune
- Aujac16.02 km²100% commune
- Concoules15.80 km²98% commune
- Cornillon15.60 km²100% commune
- Sénéchas15.10 km²100% commune
- Chambon14.31 km²100% commune
- Portes14.00 km²93% commune
- La Bruguière13.79 km²83% commune
- Issirac13.62 km²67% commune
- Saint-Paul-le-Jeune13.37 km²95% commune
- Brouzet-lès-Alès13.15 km²100% commune
- Fontarèches13.02 km²100% commune
- Les Vans12.97 km²41% commune
- Les Mages12.59 km²100% commune
- Rousson12.23 km²37% commune
- Rochegude12.05 km²100% commune
- Saint-Laurent-la-Vernède12.04 km²98% commune
- Saint-Ambroix11.86 km²100% commune
- Saint-André-de-Roquepertuis11.79 km²100% commune
- Saint-Privat-de-Champclos11.60 km²100% commune
- Banne11.52 km²35% commune
- Saint-Victor-de-Malcap11.51 km²100% commune
- Cavillargues11.29 km²100% commune
- Navacelles11.23 km²100% commune
- Saint-Gervais11.15 km²94% commune
- Saint-Brès11.03 km²100% commune
- Robiac-Rochessadoule10.88 km²100% commune
- Gagnières10.88 km²100% commune
- Vallérargues10.61 km²81% commune
- Fons-sur-Lussan10.57 km²100% commune
- Bessèges10.33 km²100% commune
- Saint-Maurice-de-Ventalon10.27 km²27% commune
- Servas10.17 km²95% commune
- Saint-Michel-d'Euzet10.16 km²93% commune
- Gaujac10.12 km²100% commune
- Le Martinet10.08 km²96% commune
- Saint-André-d'Olérargues10.03 km²100% commune
- Saint-Marcel-de-Careiret9.75 km²100% commune
- Rivières9.64 km²100% commune
- Saint-André-Capcèze9.58 km²100% commune
- Bordezac9.40 km²100% commune
- Connaux9.32 km²100% commune
- Saint-Laurent-de-Carnols9.15 km²96% commune
- Seynes9.07 km²65% commune
- Bonnevaux8.88 km²100% commune
- Tharaux8.88 km²100% commune
- Peyremale8.66 km²100% commune
- La Bastide-d'Engras8.60 km²87% commune
- Courry8.55 km²100% commune
- Molières-sur-Cèze8.51 km²100% commune
- La Roque-sur-Cèze8.32 km²100% commune
- Saint-Jean-de-Valériscle7.99 km²98% commune
- Chusclan7.96 km²61% commune
- Vénéjan7.48 km²39% commune
- Pougnadoresse7.29 km²100% commune
- Orsan7.18 km²100% commune
- Vagnas7.16 km²30% commune
- Meyrannes6.61 km²100% commune
- Saint-Pons-la-Calm6.59 km²100% commune
- Saint-Nazaire6.52 km²97% commune
- Saint-Florent-sur-Auzonnet6.39 km²68% commune
- Potelières6.30 km²100% commune
- Le Pin5.73 km²100% commune
- Les Plans5.71 km²100% commune
- La Vernarède5.62 km²99% commune
- Pouzilhac5.29 km²33% commune
- Saint-Paul-les-Fonts5.29 km²100% commune
- La Capelle-et-Masmolène4.92 km²20% commune
- Beaulieu4.37 km²17% commune
- Saint-Julien-de-Cassagnas4.36 km²100% commune
- Saint-Denis3.67 km²100% commune
- Salindres3.12 km²26% commune
- Codolet3.09 km²55% commune
- Le Garn2.92 km²27% commune
- Saint-Just-et-Vacquières2.77 km²12% commune
- Laval-Pradel2.50 km²14% commune
- Salazac2.47 km²25% commune
- Le Pont-de-Montvert1.76 km²2% commune
- Saint-Christol-de-Rodières1.70 km²22% commune
- Mons1.47 km²9% commune
- Grospierres1.42 km²5% commune
- Carsan1.10 km²10% commune
- Saint-Quentin-la-Poterie1.08 km²4% commune
- Villefort0.67 km²8% commune
- Berrias-et-Casteljau0.61 km²2% commune
- Pourcharesses0.44 km²1% commune
- La Grand-Combe0.42 km²3% commune
- Saint-Frézal-de-Ventalon0.38 km²2% commune
- Vallabrix0.38 km²5% commune
- Montaren-et-Saint-Médiers0.35 km²2% commune
- Saint-Alexandre0.29 km²2% commune
- Saint-Andéol-de-Clerguemort0.26 km²4% commune
- Gravières0.24 km²1% commune
- Caderousse0.24 km²1% commune
- Sainte-Cécile-d'Andorge0.24 km²1% commune
- Saint-Laurent-des-Arbres0.13 km²1% commune
- Belvézet0.10 km²0% commune
- Pied-de-Borne0.06 km²0% commune
- Uzès0.02 km²0% commune
- Le Collet-de-Dèze0.01 km²0% commune
- Labastide-de-Virac0.00 km²0% commune
19 intersecting protected areas
National Park - Buffer zone/Area of adhesion
324.97 km² overlap
Garrigues de Lussan
IUCN Not ReportedSpecial Protection Area (Birds Directive)
283.45 km² overlap
Hautes vallées de la Cèze et du Luech
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
126.85 km² overlap
Cévennes
IUCN IINational Park - Core Area
64.93 km² overlap
Les Cévennes
IUCN Not ReportedSpecial Protection Area (Birds Directive)
64.68 km² overlap
Marais des Agusas, montagnes de la Serre et d'Uzègues
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
57.35 km² overlap
Landes et forêts du bois des Bartres
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
38.44 km² overlap
La Cèze et ses gorges
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
35.51 km² overlap
Monts D\'Ardèche
IUCN VRegional Nature Park
34.83 km² overlap
10 more protected areassorted by overlap area
Forêt de Valbonne
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
24.14 km² overlap
Mont Lozère
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
17.38 km² overlap
Forêt de pins de Salzmann de Bessèges
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.44 km² overlap
Les Concluses
IUCN IVBiotope Protection Order
3.95 km² overlap
Vallées du Tarn, du Tarnon et de la Mimente
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.66 km² overlap
Biotope Protection Order
1.48 km² overlap
Le Valat de Solan
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.58 km² overlap
Le Rhône aval
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.40 km² overlap
Bois de Païolive et Basse Vallée du Chassezac
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.11 km² overlap
Vallée De L\'Avène
IUCN IVBiotope Protection Order
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
7 475 distinct species · 354 052 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Graphe en cours d’indexation
Calcul du tissu écologique de cette entité.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 2s).
Hydroclimate (BasinATLAS lev08)
Mean T°
12,2°C
Annual rain
767mm
Moisture idx (CMI)
-0,20
Runoff
486mm/an
PET
967mm
AET
637mm
Mean slope
7,6°
Water table
348cm
Forest
55%
Crops
28%
Urban
1%
Protected
32%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)