The construction of pumping stations often depends on the method of water intake from the source. Water is taken from rivers and lakes for small and medium-sized water pipelines, usually with the help of channel water intakes (Fig. 176). The pipes (at least two) are laid in the riverbed in a shallow trench and taken to a deeper place, lifting 0.5-2 meters above the bottom, depending on the depth of the river and the diameter of the pipe. A shore well is arranged on the shore, where water flows by gravity or by means of a siphon (dotted in Fig. 176).