HydroBASINS lev08 watershed · #2080021780
Bassin du Couesnon
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 : Ille-et-Vilaine, Manche, Mayenne
Sub-basin area
1 112,1km²
Upstream area
1 112,1km²
Discharge
20,29m³/s
Mean elev.
91m
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
748mm
Moisture idx (CMI)
-0,03
Runoff
573mm/an
PET
774mm
AET
560mm
Mean slope
1,7°
Water table
128cm
Forest
0%
Crops
39%
Urban
2%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)