Abstract: A conception of pumping station system efficiency is presented which includes all the energy consumption. A conception of canal system efficiency is established including the loss of water volume and head. This paper presents calculation methods of the efficiency of single-stage pumping station-canal system for water transfer, the efficiency of single-stage pumping station-canal system for water transfer and supply, the efficiency of multi-stage pumping station-canal system for water transfer, the efficiency of multi-stage pumping station-canal-lake reservoir system for water transfer, supply and storage. Therefore the calculation method system is formed for estimating efficiency of water transfer projects.