Which method is used to evaluate soil drainage quality?

Permeability testing is a critical method used to evaluate soil drainage quality because it directly measures how easily water can move through the soil. This is essential for understanding the soil's ability to transmit water, which ultimately affects drainage capabilities. High permeability indicates that water flows freely through the soil, promoting good drainage and reducing the likelihood of waterlogging. Conversely, low permeability suggests that water moves slowly, leading to potential drainage problems.

While soil texture analysis provides insights into the composition of the soil, it doesn't give direct measurements of drainage qualities. Water table monitoring helps track the height of the water table over time, but it doesn't assess how quickly water can pass through the soil itself. Auger sampling is useful for gathering soil samples at various depths, but it doesn't measure drainage characteristics directly. Therefore, permeability testing stands out as the most relevant and effective method for evaluating soil drainage quality.