The perennial stream in Coyote Gulch is the life source for cottonwoods and other greenery along the canyon, as well as wildlife. It is also the water source for most hikers. There are a few springs in the Gulch but the stream was much more practical as our water source. We used a two-stage filtering process, where we first poured stream water through a synthetic coffee filter to screen out larger particles, then used squeeze filters to remove any harmful organisms and fill six 1-liter bottles. This system worked perfectly and was quite efficient, requiring only a few minutes each day.