DUFF Moisture Code (DMC)

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The DMC values shown on the map are numerical ratings of the average moisture content of a loosely compacted surface organic layers (duff). The code indicates fuel consumption of surface organic layer with low bulk density and medium-sized woody material.

Please refer to the scale in the table below for interpretation of the DMC maps:

Class-Ignition Potential Interpretation
Low Top layers of organic soil are wet.
Medium Top layers of organic soil are moist.
High Top layers of organic soil becoming dry.
Extreme Top layers of organic soil are dry.