C.R.S. § 30-30-101
30-30-101. Definitions
30-30-101. Definitions. As used in this article, unless the context otherwise requires:
(1) "Channel" means that area of a stream where water normally flows between banks and not that area beyond where vegetation exists.
(2) "Obstruction" means sandbars formed by the natural flow of a stream, temporary structures, planks, snags, and debris in and along the existing channel which cause a flood hazard.