Took a spin out last night at our neighborhood Tin Top ramp. Recent rains and subsequent blow out dam releases resulted in this.

 I looked it up as I was afraid it was chemical, but it’s most likely organic:

  • When leaves, twigs or other organic substances fall into water and begin decaying, they release compounds known as surfacants.
  • This interaction breaks the surface tension, which in turn allows air to more easily mix with water and creates bubbles. These bubbles congregate as natural foam.