HydroBASINS lev08 watershed · #2080501710
Bassin de la Boulogne
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 : Loire-Atlantique, Vendée
Sub-basin area
1 269km²
Upstream area
1 269,1km²
Discharge
21,77m³/s
Mean elev.
33m
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°
11,7°C
Annual rain
797mm
Moisture idx (CMI)
-0,02
Runoff
531mm/an
PET
814mm
AET
581mm
Mean slope
0,8°
Water table
66cm
Forest
4%
Crops
53%
Urban
3%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)