The slow downward movement of water through the pore spaces of soil and porous rock under gravity, continuing the path begun by infiltration until the water either reaches the water table or is held within the soil's unsaturated zone. Percolation rates depend heavily on the permeability of the material the water passes through.
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1. Percolation (Wikipedia)
Wikimedia Foundation- Wikipedia infobox 'Lead section' = 'In physics, chemistry, and materials science, percolation (from Lat...' on 'Percolation'
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In physics, chemistry, and materials science, percolation (from Latin percolare 'to filter, trickle through', coined in the 1840s by Edward Loysel) refers to the movement and filtering of fluids through porous materials. It is not described by Darcy's law.
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