Factors Affecting Infiltration Capacity
Following are the 8 major factors that affect the infiltration capacity:
1. Texture of Soil
The texture of soil influences the rate of infiltration of water. The infiltration rate is high for the coarse-grained texture of the soil. However, for the fine-grained texture of the soil, the water infiltration rate is very slow.
2. Groundwater Table
The presence of the groundwater table very close to the ground can reduce the rate of water infiltration.
3. Rainfall Intensity
If the rainfall intensity is heavy, the impact of water causes mechanical compaction resulting in a decrease in the rate of infiltration. But, if the same quantity of rainfall occurs with low intensity, it increases the infiltration rate.
4. Temperature
If the saturated soil temperature is very low, the soil mass becomes impermeable so that the infiltration rate will be low.
We know that the flow is related to viscosity, and the viscosity of water changes with temperature. If the temperature is high, the viscosity of water will be low, hence the infiltration rate will be more and vice versa.
5. Quality of Water
If the water contains salts and other impurities it reduces infiltration rate due to clogging of soil pores.
6. Content of Soil Moisture
If the surface soil contains moisture, the infiltration rate will be low. But if the surface soil is dry, the rate of infiltration will be more.
7. Agriculture
Intensive agriculture on the soil surface makes it permeable therefore the rate of infiltration increases.
8. Human Activity
The construction of buildings, playgrounds, roads, and railways results in a reduction in infiltration capacity.
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