![]() ![]() ![]() ![]() When impact of raindrop is more then it causes sealing and closing of pores (capillaries) especially in easily dispensable soils resulting in infiltration rate The speed of raindrop is 30ft per second and force is 14 times its own weight. Ordinary size varies from 0.5 to 4mm in diameter. Impact of rain drop: the force (speed) with which the rain drop falls on the ground is said to be impact of rain drop. deep/sandy silt loam soils.įactors affecting the rate of infiltration:Ĭompactness of soil surface:A compact soil surface permits less infiltration whereas more infiltration occurs from loose soil surface. Rapid: infiltration rate is more than 2.5cm per hour e.g. Moderate: infiltration rate of 1.25 to 2.5cm per hour. Slow: infiltration rate of 0.25cm to 1.25cm per hour e.g. Very Slow: soils with less than 0.25cm per hour e.g. According to the rate of entry of water from surface to the soil, infiltration rate is grouped in to four categories. Initially the infiltration rate is more but afterwards it decreases because the soil gets wet. It is the rate at which the water enters from the surface to the soil. ![]() Infiltration is a surface characteristic of a soil. In other words, infiltration refers to the entry and downward movement of water in to the soil surface. This process is of great practical importance since its rate determines the amount of run-off over the soil surface. Infiltration is the term applied to the process of water entry into the soil generally (but not necessarily) through the soil surface and vertically downward. It is the expression of several factors including infiltration and percolation. The movement of water from the soil surface into and through the soil is called water intake. ![]()
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