Earning the title of the largest reservoir in Thailand‘s central region, Pasak Chonlasit Dam (Pa Sak Jolasid) was erected as part of the Maenam Pa Sak Royal Development Project, a royal initiative by His Majesty King Bhumibol. The earthen dam was granted its name by His Majesty who presided over its opening on 25 November 1999. The dam spans Lopburi and Saraburi provinces, is an astounding 4,860 meters long, and has a capacity of 785 million cubic meters. The dam has many uses: agricultural, industrial, and as a flood prevention measure.
It is also an emerging tourist attraction, offering visitors the unique opportunity to travel across the reservoir by train. The railway leads to Pa Sak Basin Museum and a scenic lookout point above the dam.
It is highly recommended to take the train in the cooler season between November and January. The train runs daily from 7.30 am-6.30 pm. The fare is 25 baht for adults and 10 baht for children. The dam itself is open from 7.30 am-6.00 pm.
To get to the dam, from Lopburi city, take Highway No. 3017 for a total distance of 60 kilometers. The State Railway of Thailand operates a special route to and from Bangkok-Pa SakJolasid Dam every Saturday, Sunday and public holiday.
Pasak Chonlasit Dam
Location: Nong Bua, Phatthana Nikhom District, Lopburi 15140 Thailand