HydroBASINS lev08 watershed · #2080286600
Bassin de Большой Удрай
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 5 administrative regions : Loknyanskiy rayon, Nevel'skiy rayon, Novosokol'nicheskiy rayon, Pustoshkinskiy rayon, Velikolukskiy rayon
Sub-basin area
1 301,8km²
Upstream area
1 301,9km²
Discharge
10,78m³/s
Mean elev.
149m
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°
4,7°C
Annual rain
626mm
Moisture idx (CMI)
-0,03
Runoff
261mm/an
PET
645mm
AET
488mm
Mean slope
1,1°
Water table
85cm
Forest
49%
Crops
29%
Urban
1%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)