Riparian Setback Matrix Model
According to the MDP2010, riparian areas are lands adjacent to a watercourse where the vegetation and soils show evidence of being influenced by the presence of water. Riparian areas are the green zone around a watercourse. They are the transitional zone between surface water and drier uplands and play a vital role in the healthy functioning of both.
Riparian areas have been shown to play a role in:
- Filtering sediment, nutrients, agricultural chemicals and other pollutants from surface runoff
- Protecting streambanks from erosion
- Providing food, water, and cover for many species of terrestrial animals
- Providing shade, food, and reducing stream water temperature for fish and other aquatic organisms
- Providing leaf litter and woody debris to the stream
- Providing travel corridors for a wide variety of wildlife; and
- Trees and grasses in riparian areas stabilize stream banks and reduce floodwater velocity, resulting in reduced downstream flood peaks
Foothills County has developed a Riparian Setback Matrix Model and a set of Developers Guidelines to be used to determine appropriate development setbacks from riparian areas throughout the Municipality. The municipal process for establishing riparian setbacks can be found here.