HydroBASINS lev08 watershed · #2080567970
Bassin du Viaur
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 : Aveyron, Tarn, Tarn-et-Garonne
Sub-basin area
1 540,8km²
Upstream area
1 541,2km²
Discharge
19,2m³/s
Mean elev.
638m
Administrative coverage
Species present
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°
11,0°C
Annual rain
799mm
Moisture idx (CMI)
-0,15
Runoff
415mm/an
PET
941mm
AET
662mm
Mean slope
6,3°
Water table
421cm
Forest
11%
Crops
5%
Urban
0%
Protected
12%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)