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Debris Flow-Confluences

 
Field name = [DF_Junct]
The Debris Flow-Confluence attribute provides an index of debris flow susceptibility along steep headwater streams (higher values = higher susceptibility). The attribute is based on the model of Miller and Burnett (2008) and governing variables include the number of shallow landslide sites that trigger a debris flow, headwater channel steepness, its confinement and angles of tributary confluences. The index, a probability of susceptibility of channels to debris flow movement, scour and deposition, is an empirical model calibrated for the Oregon Coast Range. However, it should provide a approximate index for debris flows in most mountain terrains.
 
The Debris Flow-Confluence attribute shows the susceptibility only at confluences to aid in the analysis of overlaps between debris flow potential and important resources such as sensitive fish habitats.
 
If these attributes are not available for your own watershed, please contact us. See NetMap's full online Technical Help.
This type of analysis requires the use of NetMap Portal Environmental Overlap tool.
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