Antecedent Moisture Condition (AMC) Adjustment
Runoff is affected by the soil moisture before a precipitation event, or the antecedent moisture condition (AMC). A curve number, as calculated above, may also be termed AMC II or, or average soil moisture. The other moisture conditions are dry, AMC I or, and moist, AMC III or . The curve number can be adjusted by factors to, where factors are less than 1 (reduce and potential runoff), while factor are greater than 1 (increase and potential runoff). The AMC factors can be looked up in a reference table.
Read more about this topic: Runoff Curve Number
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