throughflow

About 0.04 uses per million words.

Meaning

1. noun The movement of water horizontally beneath the land surface, usually when the soil is completely saturated.
2. noun The movement of an identifiably separate body of water through a larger body (such as a current of fresh water through salt water).

Similar words

streamflow underflow surface runoff throughfall stormflow earthflow rainflow baseflow overwash solifluction

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