Standing by moving water, such as a creek or river, is always an intriguing aural experience. There are many levels to the sounds you hear, the overall white noise, the nearby gurgle. As you stand there you can selectively focus on various sounds. Although it is a large, steady sound, within the steadiness the smaller sounds are always changing, the same riff never repeated twice.
This video features four different locations along the Yuba River (near Sierra City in California) one early June day.