Hydrozones Area [km2] Infiltration recharge[mm/Lear] Evapotranspiration [mm/year]
flood plain terrace 73 49,9 19,3
marsh zones – south part 131 50,0 49,0
marsh zones – north part 89 50,0 61,1
dune zones - south part 73 50,0 11,9
dune zones - north part 100 50,0 6,9
area of Wolka Smolana intake 94 50,0 13,7
area of the single-family building      
development 265 49,9 72,3
suburb of Warsaw 193 47,1 5,4
Table 4: Value of infiltration recharge – results of modelling.