Feng Shui House - Rivers and Roadways
In the good old days, the rivers were the pre-dominant mode of transportation. Today, roads have largely replace rivers for transport. In Feng Shui, we treat them, with some exceptions, in the same way.
A slow moving river that meanders is auspicious while a straight fast flowing one is not. Similarly a busy highway is not auspicious while a road with light traffic is okay.
You should not buy a house that is located along a busy roadway or a fast flowing turbulent river. The excessive Yang qi created by all the movement can influence the occupants negatively.
You should also avoid roads or rivers that come directly at your house and then turn sharply away. The smoke and dust created by the vehicles on the road end up in the house. In the case of rivers, a lot of moisture is carried into the house creating excessive dampness that is detrimental to the health of the occupants of the house.
Since qi moves in a straight line in the above examples, it is better to locate a house at the inside of a bend of a road or river rather than on the outside.
It is also inauspicious if a fast flowing river flows or busy highway runs past the back of your house.
Ideally, rivers or roads should 'flow' towards the facing of the house and 'flow' away from the back. To the Chinese water is money and this arrangement symbolize water flowing in but not out (at least you do not see it flowing out!).
It is inauspicous to see a river flowing away from the facing of the house. This symbolizes money flowing away! On a more serious note, there are formulas from the San He (Three Harmony) schools that states it is highly inauspicious if water flows away from the main door at certain angles.