The Pasak Chonprasit Dam in Lop Buri
His Majesty the King takes a photograph while walking toward the control building of the Pasak Chonprasit Dam in Lop Buri's Pattananikhom district, November 25, 1999.

Pasak River Basin Musuem

Pasak River Basin Royal Development Project, initiated by His Majesty the king started on February 19, 1989 coordinated by the Royal Irrigation Department. On October 7, 1998, His Majesty granted the name of the dam within the compound of the project as 'Pasak Chonprasit Dam', presiding over its opening on November 25, 1999.


The first railway in Thailand built across the Pasak River dam

The Pasak River is an importtant tributaries of the Chao Phraya River, starting in Dan Sai District of Loei Province, and flowing into Phetchabun, Lop Buri and Saraburi. It joins the Chao Phraya in Aytthaya Province. The river is important to the people living in the lower central plains suffering from water shortages during droughts and affected by flooding during the rainy season. An expanded economy and population growth has led to a growing need for water.


The soil dam long 4,860 metres and height 36.50 metre

In view of the urgency of the Pasak River Basin Royal Development Project, a committee, with various subcommittees, formed to enhance the efficiency of the project. After the Royal Irrigation Development constructed the Pasak Chonprasit Dam in an area stretching over the provinces of Lop Buri and Saraburi, people in these areas felt the impact. Also affected were schools, temples, health centers, police offices, highways and railways.


The control building of the Pasak Chonprasit Dam at the top view

Those affected have relocated to new areas and received government compensation. The authorities find the new communities, emerging around the dam, are easier to look after. Infrastructure, including roads, electricity and water, has been provided. A sub-committee looks after career promotion and development along with housewives and farmers groups organized to bring more income to the villagers.


Watergate of the Pasak River, Lopburi Province

Apart from being a major source for agriculture, industry and drinking water in Lop Buri and Saraburi, the Pasak Chonprasit Dam also helps prevent flooding on the Pasak riverside and in Bangkok and outlying areas of the city. Morever, the dam provides a large-scale, fresh-water fish source and will be developed as a major tourist attraction.