Among the different geographical formations that occur on planet Earth, the delta is undoubtedly one of the most interesting. When we speak of delta we are referring to that formation that arises at the mouth of a river towards the sea and that is characterized by the formation of numerous channels or branches of that river. This forms a kind of network of small branches of the river that all go towards the sea.
Normally, the formation of a delta in a certain area has to do with the natural dragging of sediments that the water makes and that tends to form parts of land that can be more or less firm. Thus, the original river ends up dividing into many small arms that cross these sediment remains and continue their course towards the sea where they all come together again. Logically, the abundant presence of sediments makes the river bed less speedy and calmer, being able to take advantage of it from the human point of view in a more accessible way. In many cases too, and depending on the firmness of the sediment heaps, access spaces can be established for man to inhabit.
Deltas can also be formed by the action of water on land, in which case the erosion is underwater and takes thousands of years. A characteristic example of this type of delta is the one that forms in the Ganges River, in India. Other famous and very important deltas are those that form at the culmination of the Nile River (Egypt), the Mississippi River (United States), the Amazon River (Brazil), the Tigre River (Argentina), and the Paraná River (Argentina). , the Ebro (Spain) or the Volga (Russia). All these are just some of the existing deltas since in many spaces where the river connects with the sea this geographical formation appears.
