HydroBASINS lev08 watershed · #2080022440
Bassin de l'Authie
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 : Pas-de-Calais, Somme
Sub-basin area
1 103,2km²
Upstream area
1 103,3km²
Discharge
20,25m³/s
Mean elev.
92m
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°
10,1°C
Annual rain
662mm
Moisture idx (CMI)
-0,06
Runoff
542mm/an
PET
706mm
AET
514mm
Mean slope
2,0°
Water table
115cm
Forest
0%
Crops
67%
Urban
2%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)