From a study of data from the work group to review and track work. The Department of irrigation scheme the story forces large and medium projects that have started up since the beginning of the irrigation system in the country develop Thailand. In the year 2419
The study used data from the monitoring work subjected Irrigation Planning Unit large and medium-sized projects. The construction started since the beginning of the irrigation system developed include rice in Thailand in 2419.
The study from the check and follow the planning division, Department of irrigation, with large, medium and small projects The construction start up since the beginning of development irrigation system in Thailand. In 2419.