What factor can contribute to high ground resistance?

The rising water table can significantly contribute to high ground resistance due to its effect on soil conductivity. When the water table rises, it can lead to changes in the water content of the soil. Saturated soils typically have lower resistivity because water, especially when it contains dissolvable minerals, helps facilitate the flow of electrical currents. However, if the water table rise leads to a scenario where the water displaces soil particles and causes soil compaction or creates less conductive conditions, overall resistance could increase.

In contrast, factors like low soil temperature generally result in lower electrical resistivity in conductive materials, and proximity to electrical sources tends to reduce ground resistance due to the increased flow of electricity. Soil composition directly influences conductivity; for example, sandy soils may have higher resistivity compared to clay soils, thus creating variable impacts on ground resistance as well. Therefore, the rising water table is a relevant factor that can lead to changes in the ground's resistance.