Mentions the reforestation projects at Huai Hong Khrai in Doi Saket District, Chiang Mai Province. Notes the condition of Huai Hong Krai twenty-five years ago, His Majesty the King's initiative for the development of the land and the establishment of the Huai Hong Khrai Royal Development Study Centre. Describes the construction of check dams, small-scale irrigation, identifying three kinds of check dams based on different materials, and construction techniques. Provides the benefits of the check dams, e.g. bringing soil fertility, reducing the power of the water and creating the sense of belonging and ownership of communities.