Drainage in the engineering practice is often used for stabilizing of instable areas. According to consumption of energy, the methods can be divided into two groups. Traditional methods of drainage without need of energy, i.e. using gravity, are usually limited by its maximal depth of 3–5 m (as gravel drains). Considerable length of subhorizontal wells can be another disadvantage. On that account, the innovative method of siphon drains represents a flexible alternative. In the paper, both the method of siphon drains and it's last applications in Slovakia are introduced. Conclusions and reflection of the drainage based on field observations and maintenance are included.