Surely it sounds like you have studied the different layers not only of the Earth, but also of the soil. Although it is true that this study is rather part of geology, some aspects are very important for agriculture, such as knowing what is the water table and how to take advantage of it. It is a clear example of how the various scientific branches can help each other.
As you may have already deduced, in this article we will explain what the water table is and what it is for, mentioning its usefulness in agriculture and its importance in the field of construction. We will also explain where exactly it is located, since the ground is divided into several levels. If you are curious about this topic, surely you will find it very interesting. Also, knowledge does not take up space!
What is the water table and what is it used for?
There are different ways to refer to the water table: water table, water table, water table, groundwater, water table or simply water table. It is basically a level at which both atmospheric pressure and water pressure are equal. In general, the relief of this layer is very similar to that of the normal surface, but it is somewhat smoother and can emerge to the outside through the formation of water deposits.
In other words: The water table is a level in which groundwater is found and whose depth is usually very low compared to ground level. We could say that it is a fairly shallow aquifer, since these are usually located in deeper areas. At this level, the gaps between the grains of the earth are filled with water, thus saturating the soil. If it were the case that the layer above it is permeable, there may be unsaturated soils. In these cases, the voids also contain air, not just water.
To raise the water table, a reduced and additional supply of water is enough. In this way, the unsaturated layer becomes a saturated layer. In the event that the thickness of the unsaturated layer, which becomes saturated, is relatively small and, in addition, the topography of the site is adequate, the water can reach the surface, becoming visible to our eyes. This is how lakes, ponds and ponds are created. In very serious cases, it can even trigger a flood. This type of surface is called a shallow water table.
Utility of the water table
Now that we know what the water table is, we are going to discuss its usefulness. Well, as surely you can already imagine, water sources and wells are connected to this level, and the water that comes from there may or may not be drinkable. Since it is not very deep, these aquifers are the most exposed to the contamination that we generate on the surface.
It should also be noted that the water table It is very advantageous for most agricultural crops, as long as the depth is adequate. This will depend mainly on the type of crop, of course. Some tolerate more water, that is, they support higher water tables, while others prefer lower ones.