Riparian Vegetation Influences

In certain channels, adjustments are seen as a result of riparian vegetation removal or changes. Width to depth ratios of Stream types C, D, E and F increase when riparian tree and shrub species are converted to grasses. This sets in motion a series of adjustments to increase sediment Deposition and trend toward a new stability.

Riparian vegetation is categorized as:

• Forbs
• Annual grass
• Perennial grass
• Rhizomatous grasses (sedges, rushes)
• Low brush
• High brush
• Combination overstory
• Deciduous with brush or grass
• Perennial overstory
• Wetland vegetation community

Operational forecasters that understand the linkage between vegetation changes and evolution sequences can better anticipate FGM changes to regional rivers.

Image courtesy of FISRWG