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Excerpts from the report Foreword: Erosion is the wearing away of the soil by water, wind, and other forces. Soil erosion is at once the greatest threat to the Nation's soil productivity and the largest source of pollutants in our waterways. Water causes about two-thirds of the erosion on our agricultural land. This booklet was written for anyone interested in knowing how water erosion happens and why we must get erosion under control.

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