Sediment filled streams are not suitable for trout due to the high ammonia levels and depletion of dissolved oxygen.
The watershed in the Valles Caldera National Preserve is dominated by snow pack.
Monsoonal rains carry organic sediments from the top of the watershed downward causing changes in the rivers and streams.
Microbial life helps to cement the layers of travertine.
Watershed is very important to the western states and in the image you can see how many people depend on the the Rio Grande Watershed.
Ponds in the Valles Caldera serve as a source of water and food for the native and non native species.