Name: Designated Sediment Source Area
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Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The surface area draining to each debris flow traversal corridor is delineated from the confluence of the corridor with a fish-bearing stream. The delineated area defines a subbasin within the much larger 4th-field HUC analysis basin. Within each subbasis, the initiation sites for debris flows that can carry material to the fish-bearing stream at the subbasin mouth are mapped. These are the sediment source areas for that subbasin. Within each subbasin, the highest 33% of the mean annual deliveered sediment (source areas) is defined as the "Sediment Source Areas".</SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
Copyright Text: Private Forest Accord Steep Slope Prescriptions; please refer to Appendix B: Delineating Landslide and Debris Flow Susceptibility in the Private Forest Accord (2022) Report.
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Label: Highest 33% Designated Sediment Source Area
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Label: Highest 20% Landslide Susceptibility with Trigger Sources Contained within the Area
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