I don't think it's news that subsurface flow occurs.

The code includes the MeshGen2D mesh generator, which was specifically designed for variably-saturated subsurface flow and transport problems.

Typically, such models contain representations of surface runoff, subsurface flow, evapotranspiration, and channel flow, but they can be far more complicated.

Its development has spanned several decades; a time over which the art and science of subsurface flow and transport simulation has dramatically evolved.

Models single and coupled processes for geological and environmental phenomena particularly based around subsurface flow.

The features may quickly dry on the surface, or could be shallow subsurface flows.

The presence of these dense, shallow-rooted shrubs also means less water reaches the soil, subsurface flows and deep drainage.

Hydrologically, Song Köl basin is characterized by poorly developed surface stream flows, and substantial subsurface flow.

A sequential uncertainty domain inverse procedure for estimating subsurface flow and transport parameters.

'Undertow' is a subsurface flow of water returning seaward from shore as result of wave action.