HydroBASINS lev08 watershed · #2080571240
Bassin de Contre-Canal
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 : Gard, Vaucluse
Sub-basin area
265,6km²
Upstream area
76 610,5km²
Discharge
1 505,69m³/s
Mean elev.
78m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de l'Eygues2022 km²
- Bassin de la Cèze1357 km²
2 dept-equivalent regions (GADM L2)
- 181.1 km²68.0% of basin
- 85.1 km²32.0% of basin
24 communes (GADM L5)Available for FRA, RWA
- Rochefort-du-Gard30.52 km²91% commune
- Orange29.01 km²38% commune
- Caderousse28.22 km²88% commune
- Roquemaure26.02 km²100% commune
- Pujaut23.15 km²98% commune
- Tavel20.39 km²100% commune
- Châteauneuf-du-Pape18.82 km²76% commune
- Saint-Laurent-des-Arbres16.60 km²99% commune
- Sauveterre12.17 km²93% commune
- Lirac9.81 km²100% commune
- Saze9.38 km²73% commune
- Saint-Geniès-de-Comolas8.31 km²100% commune
- Villeneuve-lès-Avignon6.58 km²37% commune
- Laudun-l'Ardoise6.48 km²19% commune
- Sorgues4.44 km²13% commune
- Montfaucon4.02 km²100% commune
- Avignon3.86 km²6% commune
- Saint-Victor-la-Coste3.83 km²14% commune
- Les Angles2.37 km²15% commune
- Domazan1.05 km²9% commune
- Courthézon0.71 km²2% commune
- Valliguières0.23 km²1% commune
- Estézargues0.21 km²2% commune
- Codolet0.00 km²0% commune
3 intersecting protected areas
Le Rhône aval
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
28.27 km² overlap
Islon De La Barthelasse
IUCN IVBiotope Protection Order
0.23 km² overlap
La Cèze et ses gorges
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 733 distinct species · 156 517 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 de Contre-Canal : 30 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) + 4 bulles famille, 55 interactions GloBI documentées sur 2 types (connectance 9.8%, filtre Serrano α=0.2). Les 4 bulles regroupent 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°
13,4°C
Annual rain
730mm
Moisture idx (CMI)
-0,28
Runoff
300mm/an
PET
1 014mm
AET
615mm
Mean slope
2,3°
Water table
206cm
Forest
10%
Crops
38%
Urban
9%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)