Looking to the Form school of Feng Shui, the observation in regard to how fast or slow a body of water was moving, in what direction and even how it eroded the land; all played a factor in locating a good place for homes to be built upon.

In modern day times, you could say the same concept still exists, only with a more urban and suburban perspective. Bodies of water are now translated into the design of sidewalks, streets, driveways and private pathways leading to your front door. 

Including a curved pathway and even driveway design that gently approaches your front door is more desirable than a straight pathway. The energy flow (represented by water and in modern designed pathways) has a chance to be more controlled with its movement vs rushing straight into your home. 

It's a Feng Shui design principle to strongly consider if remodeling the outside of your home or before construction.