HydroBASINS lev08 watershed · #2080481490
Bassin de la Seiche
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 : Ille-et-Vilaine, Mayenne
Sub-basin area
817,2km²
Upstream area
817,2km²
Discharge
11,64m³/s
Mean elev.
69m
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°
11,1°C
Annual rain
729mm
Moisture idx (CMI)
-0,11
Runoff
458mm/an
PET
817mm
AET
568mm
Mean slope
1,4°
Water table
106cm
Forest
0%
Crops
75%
Urban
6%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)