His Majesty the King's construction Khun Dan Prakranchon dam. Location on Ban Thadan, Hentung Sub-district, Muang District, Nakornnayok. Which is part of the Nakhonnayok River basin development project to help the people. The way lower with water use in agriculture . Help alleviate flooding that occurred in Nakhonnayok province district every year to the industry and to correct the areas of soil, water. As a result, the population has a sour soil problems, reduce damage from flooding, has 35 percent.