1. Detection of underground water flows on a map or photographs of the terrain.

2. Delineation of water flows directly on the studied terrain.

3. Determination of the depth, the thickness of the aquifer, the direction of water movement.

4. Dowsing measurement of the flow rate - the volume of water passing through the cross-section of the water flow per unit of time. For example, liters per minute or liters per second.

5. Approximate water analysis:

• fit for drinking;
• suitable for drinking after filtering;
• radioactive;
• only suitable for watering plants.

6. Locating a drilling location where the water vein with the highest flow rate, among all in the studied terrain, intersects with other water veins located at other depths.

It is good to use the waters of several water veins with one drilling. Thus, a larger total flow rate is obtained. In addition, not rarely, in some time, when the soil layers are moved, the well remains without water. If we draw water from several streams with one well, this danger is minimized.