HydroBASINS lev08 watershed · #2080575050
Bassin du Dadou
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 : Aveyron, Tarn
Sub-basin area
841km²
Upstream area
841km²
Discharge
10,54m³/s
Mean elev.
380m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 841.8 km²99.9% of basin
- 0.8 km²0.1% of basin
59 communes (GADM L5)Available for FRA, RWA
- Paulinet72.98 km²100% commune
- Montredon-Labessonnié68.48 km²62% commune
- Graulhet55.83 km²97% commune
- Le Masnau-Massuguiès45.82 km²97% commune
- Lombers39.45 km²100% commune
- Rayssac30.03 km²100% commune
- Saint-Antonin-de-Lacalm27.86 km²100% commune
- Teillet25.41 km²100% commune
- Saint-Pierre-de-Trivisy23.60 km²65% commune
- Labessière-Candeil22.64 km²100% commune
- Arifat20.22 km²100% commune
- Saint-Julien-du-Puy19.35 km²100% commune
- Vénès18.81 km²68% commune
- Puybegon18.72 km²97% commune
- Lautrec18.68 km²34% commune
- Fauch17.24 km²100% commune
- Dénat15.13 km²100% commune
- Giroussens14.32 km²34% commune
- Réalmont14.20 km²100% commune
- Massals13.86 km²85% commune
- Mont-Roc13.80 km²100% commune
- Saint-Genest-de-Contest13.80 km²100% commune
- Roumégoux13.33 km²100% commune
- Briatexte12.65 km²82% commune
- Saint-Gauzens12.53 km²69% commune
- Montdragon12.32 km²100% commune
- Terre-Clapier12.29 km²100% commune
- Saint-Lieux-Lafenasse12.24 km²100% commune
- Brousse11.73 km²83% commune
- Saint-Salvi-de-Carcavès10.14 km²91% commune
- Cadalen9.76 km²24% commune
- Ronel9.61 km²100% commune
- Lacaze9.59 km²21% commune
- Villefranche-d'Albigeois9.57 km²44% commune
- Lamillarié8.88 km²65% commune
- Sieurac8.84 km²100% commune
- Le Travet8.45 km²100% commune
- Busque8.41 km²100% commune
- Ambres6.14 km²32% commune
- Mouzieys-Teulet5.61 km²44% commune
- Laboutarie5.44 km²100% commune
- Lasgraisses5.29 km²45% commune
- Le Fraysse5.27 km²18% commune
- Alban5.21 km²54% commune
- Fréjairolles4.46 km²24% commune
- Peyrole4.00 km²20% commune
- Parisot3.75 km²13% commune
- Poulan-Pouzols3.29 km²28% commune
- Labastide-Dénat2.98 km²41% commune
- Curvalle2.82 km²7% commune
- Vabre2.45 km²9% commune
- Missècle2.10 km²38% commune
- Orban1.98 km²21% commune
- Laval-Roquecezière0.41 km²1% commune
- Montfranc0.36 km²5% commune
- Ambialet0.25 km²1% commune
- Técou0.15 km²1% commune
- Pousthomy0.07 km²0% commune
- Moulayrès0.00 km²0% commune
3 intersecting protected areas
Haut-Languedoc
IUCN VRegional Nature Park
159.93 km² overlap
Grands Causses
IUCN VRegional Nature Park
0.92 km² overlap
Vallées du Tarn, de l'Aveyron, du Viaur, de l'Agout et du Gijou
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 823 distinct species · 90 163 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 42 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 Dadou : 39 espèces + 3 bulles famille, 65 interactions GloBI documentées sur 5 types (connectance 7.5%, filtre Serrano α=0.2). Les 3 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°
12,2°C
Annual rain
780mm
Moisture idx (CMI)
-0,19
Runoff
397mm/an
PET
967mm
AET
650mm
Mean slope
6,0°
Water table
321cm
Forest
12%
Crops
45%
Urban
1%
Protected
19%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)