HydroBASINS lev08 watershed · #2080577700
Bassin de l'Agoût
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 1 administrative regions : Tarn
Sub-basin area
309,2km²
Upstream area
1 036,8km²
Discharge
16,44m³/s
Mean elev.
404m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de l'Agoût514 km²
- Bassin du Gijou214 km²
23 communes (GADM L5)Available for FRA, RWA
- Castres62.26 km²63% commune
- Montredon-Labessonnié41.70 km²37% commune
- Burlats32.47 km²100% commune
- Lacrouzette26.70 km²91% commune
- Cambounès22.61 km²100% commune
- Noailhac20.86 km²99% commune
- Saint-Salvy-de-la-Balme18.36 km²100% commune
- Boissezon18.18 km²93% commune
- Roquecourbe16.41 km²100% commune
- Le Bez15.31 km²47% commune
- Vabre11.24 km²40% commune
- Valdurenque6.08 km²100% commune
- Lagarrigue4.18 km²92% commune
- Saint-Jean-de-Vals4.04 km²88% commune
- Payrin-Augmontel3.44 km²27% commune
- Caucalières1.77 km²14% commune
- Le Rialet1.67 km²22% commune
- Saint-Germier0.80 km²19% commune
- Brassac0.50 km²2% commune
- Pont-de-Larn0.48 km²1% commune
- Lasfaillades0.38 km²5% commune
- Montfa0.23 km²2% commune
- Saint-Pierre-de-Trivisy0.06 km²0% commune
4 intersecting protected areas
Haut-Languedoc
IUCN VRegional Nature Park
211.57 km² overlap
Vallées du Tarn, de l'Aveyron, du Viaur, de l'Agout et du Gijou
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
12.31 km² overlap
Causse de Caucalières et Labruguière
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.76 km² overlap
Basse vallée du Lignon
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.56 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 924 distinct species · 75 520 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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'Agoût : 35 espèces + 5 bulles famille, 88 interactions GloBI documentées sur 4 types (connectance 11.3%, filtre Serrano α=0.2). Les 5 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
789mm
Moisture idx (CMI)
-0,17
Runoff
454mm/an
PET
957mm
AET
654mm
Mean slope
7,9°
Water table
327cm
Forest
66%
Crops
10%
Urban
7%
Protected
60%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)