My wife is not a big fan of flowing water in images. She prefers faster shutter speeds that freezes the water more. I just love flowing water in images. Such images tend to evoke mood within me. The flowing water just takes my eyes on a journey. The water often forms strong lead-in lines that help to create depth. Let's look at an example:

I just love how the flowing water catches my attention right at the edge of the image and then how it just pulls me into the image. So how did I create this image? First of all, the stream of water right at the edge is not that big but I wanted to give it prominence. Using a wide angle lens and going right close to it exaggerates it size in comparison to the rest of the image. Secondly, play with your shutter speeds until you get the right amount of flow that you like. You will need a tripod for this kind of photography as your shutter speeds can get quite low. Lastly, create lines that go into your image so that viewer will look into your image. This is what gives images depth.

          Windless days are best for this kind of photography. Since you are using a slow shutter speed any movement in the foliage will be out of focus. The less wind the sharper your image.