Definition
The word antecedent simply means preceding conditions. Combining the terms "antecedent" and "moisture" together means preceding wetness conditions. Antecedent moisture is a term that describes the relative wetness or dryness of a sewershed, which changes continuously and can have a very significant effect on the flow responses in these systems during wet weather. Antecedent moisture conditions are high when there has been a lot of recent rainfall and the ground is moist. Antecedent moisture conditions are low when there has been little rainfall and the ground becomes dry.
Read more about this topic: Antecedent Moisture
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