The National Soil Erosion Research Laboratory

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Water Infiltration Rate

Infiltration is the movement of water from the soil surface downwards into the soil profile. Water moves by gravity into the open pore spaces in the soil then is drawn deeper into the soil by suction. The more pore spaces and the less existing moisture in the soil, the higher the infiltration rate will be. Soil texture and soil structure, to a large degree, determine what the infiltration rate will be.


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