Storage dam
Pasak Jolasid Dam
เขื่อนป่าสักชลสิทธิ์
Pasak Jolasid Dam is a storage dam on the Pa Sak River in Phatthana Nikhom District, Lopburi province. Its reservoir holds 960 million m³. It was completed in 1999 and is run by the Royal Irrigation Department. Built under a royal initiative to relieve flooding in the lower Chao Phraya basin.
Reservoir storage today
102.3% of capacity at normal storage level
- Water in the reservoir
- 891 million m³
- Inflow
- 53 million m³ a day
- Released
- 2.2 million m³ a day
As of 29 Sep 2026 Data from the National Hydroinformatics Data Center (ThaiWater), HII, refreshed every 10 minutes
Key facts
- River
- Pa Sak River
- Location
- Phatthana Nikhom District, Lopburi province
- Coordinates
- 14.8614, 101.0661
- Reservoir capacity
- 960 million m³
- Dam height
- 37 m
- Dam type
- Earthfill dam
- Completed or opened
- 1999
- Operator
- Royal Irrigation Department
Frequently asked questions
- Where is Pasak Jolasid Dam?
- Pasak Jolasid Dam is in Phatthana Nikhom District, Lopburi province.
- What is the water level of Pasak Jolasid Dam today?
- Pasak Jolasid Dam is 102.3% full, holding 891 million m³, as of 29 Sep 2026.
- How much water can Pasak Jolasid Dam hold?
- The reservoir of Pasak Jolasid Dam holds 960 million m³.
- When was Pasak Jolasid Dam built?
- Pasak Jolasid Dam was completed and opened in 1999.
- Who runs Pasak Jolasid Dam?
- Pasak Jolasid Dam is run by the Royal Irrigation Department.
- What is the Pasak Jolasid Dam called in Thai?
- In Thai the Pasak Jolasid Dam is เขื่อนป่าสักชลสิทธิ์.