Subsurface flow

The remaining water, through infiltration, penetrates the soil traveling underground, hydrating the vadose zone soil, recharging aquifers, with the excess flowing in subsurface runoff.

The amount of runoff reaching surface and groundwater can vary significantly, depending on rainfall, soil moisture, permeability, groundwater storage, evaporation, upstream use, and whether or not the ground is frozen.

The residence time generally ranges from several decades to many centuries, implying the establishment of a complete chemical equilibrium with the aquifer.

[1] Subsurface water may return to the surface in groundwater flow, such as from a spring, seep, or a water well, or subsurface return to streams, rivers, and oceans.

Mainly, water flows through the ground which leads to the ocean where the cycle begins again.