What Is Irrigation Design?

[Typical design year for irrigation] (also known as typical irrigation year, irrigation design representative year). When planning and designing an irrigation project, a representative year selected according to the irrigation design guarantee rate. The annual water quantity, annual water consumption and the distribution process during the typical year of irrigation design are representative.

Irrigation design typical year

Right!

[Typical design year for irrigation] (also known as typical irrigation year, irrigation design representative year). When planning and designing an irrigation project, a representative year selected according to the irrigation design guarantee rate. The annual water quantity, annual water consumption and the distribution process during the typical year of irrigation design are representative.

The long series method is used to calculate the year-to-year incoming water and irrigation water consumption, and the irrigation project planning and design is carried out accordingly. This method has high accuracy, but the calculation workload is large. In some small and medium-sized irrigation project designs, there is often lack of sufficient long series data. Several typical years close to the specified irrigation design guarantee rate can be selected as the basis for the design. The calculation workload is small. If properly selected, the long series can be obtained. The close results of the method have been widely used in the design of irrigation projects.

There are two principles for selecting a typical year: (1) the annual water volume and annual irrigation water volume in a typical year should be as close as possible to the design year value; (2) the typical year, the water time distribution should be the most unfavourable for the irrigation project design.