In this water is first stored at upstream side of the dam for power generation and then discharged back into the river at the dowbstream side of the dam. Thus, sufficient quantity of flow is again available in the river. At a suitable place in downstreampick-up weir is contructed to divert water to canals.

In direct irrigation system water is directly diverted to the canal without storing water. For this system low diversion weir or diversion barrage is constructed across the river. So, this gives the diversion scheme for direct irrigation system over the other systems of irrigation.

In storage irrigation system a solid structure such as dam, it forms a reservoir at the upstream side of the dam. Due to this, some land property gets submerged.

In lift irrigation system mechanical means are used to supply water to the crops for irrigation. This is quite the case of wells where by mechanicals means water is supplied for irrigation.

Unlike any other irrigation systems lift irrigation system is used in when water supply is at too low level to run by gravitation on to the land. So, in such cases water is needed to be lifted by mechanical means for irrigation.