Rama VI Dam is one of Thailand’s most important irrigation engineering heritages and is regarded as the country’s first water diversion dam. It was constructed during the reign of King Vajiravudh (King Rama VI) to address flooding and drought problems affecting agriculture in the Chao Phraya River Basin. The dam was completed in 1924 and was originally named “Phra Thianracha Dam” before being graciously renamed “Rama VI Dam” as a royal memorial honoring the King’s vision in water resource development.

The primary function of Rama VI Dam is to divert water from the Pa Sak River into the Rapee Phat Canal, a major irrigation canal that supplies water to vast agricultural areas in central Thailand, particularly in Phra Nakhon Si Ayutthaya, Pathum Thani, and surrounding provinces. The dam represents a pioneering model of modern water management, transforming Thai agriculture from reliance on natural rainfall to a systematic irrigation network that remains effective to this day.

A distinctive feature of the dam is its six large steel sluice gates, designed according to Western engineering principles of the early 20th century. These structures are both strong and elegant, adorned with the royal emblem of King Rama VI, symbolizing the integration of modern technology with the national development ideals of that era.

Nearby stands the equestrian statue of King Rama VI, a revered landmark where visitors, students, and local people pay respect and commemorate the King’s contributions. The site also serves as an open-air classroom for learning about Thailand’s irrigation history, which laid the foundation for national food security and agricultural prosperity.

The surrounding environment of the dam is peaceful and lush, cooled by constant breezes from the Pa Sak River. The riverbank area has been developed into a public park with walking paths and open spaces for relaxation, allowing visitors to observe the riverside lifestyle of local communities. In the evening, the reflection of the setting sun on the water and the dam structure creates a breathtaking and serene atmosphere.

For tourists and photographers who appreciate vintage charm, Rama VI Dam is an outstanding photography spot, featuring classic architecture and scenic views of one of Thailand’s most important rivers. Nearby riverside restaurants and community shops selling local products further enhance the visitor experience, making a trip to the dam both educational and leisurely.

Rama VI Dam is therefore not merely an irrigation structure, but a powerful symbol of the beginning of Thailand’s national water resource development—standing firm and serving the people for more than a century.

Private Car:

• Take the Ayutthaya-Tha Ruea route toward Tha Luang; the dam is located near Wat Satue, making it easy to visit both.

Public Transport:

• Take a van from Bangkok to Tha Ruea district, then use a local taxi or motorcycle taxi to reach the dam area.

Best Visiting Season:

• Late afternoon (04:30 – 06:00 PM) is the best time for sunset views and comfortable photography.

Footwear & Equipment:

• Casual attire is fine, but comfortable walking shoes are recommended for exploring the dam ridge.

Photography:

• A viewpoint from the northern side of the Pa Sak River provides a beautiful perspective of the aligned floodgates.

Planning:

• Plan your trip alongside a visit to Wat Satue, as they are only a few minutes apart and offer great local food options.

Admission Fee

• Local visitors: Free

• Foreign visitors: Free

Opening Hours

• General daily hours: 06:00 – 18:00 (Access to the dam ridge may be restricted during certain periods).