Mae Wong dam. A stone dam project left a large clay core. That plan, construction on Hill Sobkok, location is Mae Le, Mae Wong, Nakhon Sawan. To solve the problem of flooding and to provide farmers with irrigation water in a drought page. By Mae Wong dam height 57 meters, the length is 730 meters, the width is 10 meters. Storage capacity of the reservoir is approximately 250 million cubic meters. Use the total construction budget 13,280 million. Spend time in the construction of 8 years. Then, I will talk about the construction of Mae Wong dam has problems and effect in 3 ways.