The Content Of The Article:
- Do you really need to find a water vein?
- The groundwater level determines the chances of success
- How do you get information about the groundwater level?
- Search for water in the earth layers
The still-widespread notion that there are aqueducts under the ground that carry the water in a similar way to a canal does not have much to do with the actual geology. Rather, water in Germany is almost everywhere found as groundwater. It moves slowly through the bodies of rock located in the lower earth layers and not in water veins.
Do you really need to find a water vein?
So, it's less about finding a water vein than knowing how the groundwater situation looks at your place of residence and how deep the groundwater is. The depth of the groundwater level hasdecisive influence on whether your well project has economic prospects of success:
The groundwater level determines the chances of success
The most famous fountain is the dug wellsthat looks like the fairy tale fountain of the "Frog King" or the fountain on the medieval homestead. For such a well, a shaft is brought into the ground, the walls of which can be made of walls, (steel) concrete or Betonschachtringen. The shaft must reach into the groundwater. As economically worthwhile, a well is considered only if the groundwater level is higher than about 8 meters. Usually, no manhole well is built for the individual supply, because it only supplies small amounts of water and is not completely hygienic.
On artesian well provides water that meets all hygienic requirements, it can also be drilled down to any depth of the groundwater. However, as the depth increases, so does the cost of the hole, increasing in depth requires more and more force, so you will need longer bits and human assistance. The deeper the groundwater can be found, the less economical the well will be.
It is the same with the tube well, which is often used for smaller individual supplies and for garden irrigation. However, these wells, which are of interest to the private gardener, can only be created if the groundwater begins no more than seven meters below the pump site. The suction pumps used here can not pump more than eight meters. Although it is possible to meet through a shaft to a lower water level, whether that is still economically viable, but then should be checked in each case. Even if the handyman creates his own well, in addition to the rental fee for the auger additional material costs come to him. Also the Spülbrunnen, which is created by flushing in suitable soil conditions, must penetrate to the groundwater.
How do you get information about the groundwater level?
So it's all about exploring the depth of your groundwater before you start thinking about how to make a well and the type of well. Because if your groundwater is very deep, you are likely to blow off the whole (then very expensive) well construction project, if you just care to water your garden.
- There are several ways to explore the groundwater table:
The easiest way is if there already is a well in your area. So you can just listen in the neighborhood, the neighbor will tell you how deep he had to drill for his well.
- As a rule, the local water supplier or the municipality can also provide information about the groundwater level. In many cities there are whole groundwater maps at the state authorities, where you can read fairly well where your groundwater can be found. Or there is a large groundwater network that may have a level near you.
- If you would like to build a well in a very sparsely populated area, perhaps a generalized overview of the basic yield of a groundwater well, which you could obtain via a hydrogeological survey map of the Federal Republic of Germany, will help you.
Of course, you can also simply drill off by borrowing a ground drill from a tool rental company and doing a test hole.
Search for water in the earth layers
Whether you can dare to simply start a test well without a more detailed information about the groundwater at the planned well location, also depends on the soil and the typical groundwater education in their area: In shallow areas, the groundwater underground forms a kind of lake, the usually everywhere the same distance to the earth's surface. So you can use a known groundwater level at some distance as a guarantee that it will look similar to you.
Only in exceptional cases, when there is a flat surface under the earth, there are distortions that vary the distance. Things look quite different in valleys and mountains. Here, the water flows underground to the valley and usually emerges at the lowest point as a stream.The well should be created here as far as possible in the valley, but where usually also the houses were built. Hinderlich can be in a valley solid rock in the ground, on a hard rock well, the private well builder usually fails.
Outside of the hard-to-manage hard-rock deposits, the soil layers that are touched during well construction can reach up to ten meters into the earth. This layer of earth is about a million years old and consists of gravel and sand, clay or clay, possibly also moor, peat and sea silt. The soil is built up in layers, layers of clay or clay between layers of sand or gravel, which accumulate water. Above that, the groundwater forms its subterranean lake, it can form different groundwater floors in this way.
When drilling wells, it is now important to land in a layer in which a good water supply is possible. The clay and loam layers are very fine-grained, here hardly collects groundwater, these types of soil are therefore very hesitant to give off water to a well. If you have landed in such a layer, you can tell by the fact that the well runs dry immediately during operation or you can simply not pump any water with the rotary pump, the beater simply bounces under. More promising are sandy or pebbly soils, in which water flows from all directions.