Storage dam
Bhumibol Dam
เขื่อนภูมิพล
Bhumibol Dam is a storage dam on the Ping River in Sam Ngao District, Tak province. Its reservoir holds 13,462 million m³. It was completed in 1964 and is run by the Electricity Generating Authority of Thailand (EGAT). The tallest dam in Thailand and the country's first multipurpose dam.
Reservoir storage today
71.9% of capacity at normal storage level
- Water in the reservoir
- 9,683 million m³
- Usable water
- 5,883 million m³ (60.9% of usable capacity)
- Inflow
- 16 million m³ a day
- Released
- 10 million m³ a day
As of 14 Nov 2026 Data from the National Hydroinformatics Data Center (ThaiWater), HII, refreshed every 10 minutes
Storage this year and last
Up 70.5 million m³ over the last 7 days
3,717 million m³ less than on the same day last year
- 2026
- 2025
- Normal storage 13,462 million m³
- Upper and lower rule curves
Daily storage from the National Hydroinformatics Data Center (ThaiWater). The rule curves are the range the dam is meant to be kept within through the year.
Try the reservoir
Change the inflow, the release and the rain over the dam's catchment, and see what the reservoir would do over the next 90 days, starting from today's figures.
The reservoir would rise by 5.9 million m³ a day
Over the next 90 days the reservoir reaches neither normal storage, a rule curve nor dead storage
In 90 days it would hold about 10,218 million m³ (75.9% of capacity)
- Actual storage
- Projected
- Normal storage
- Upper and lower rule curves
- Dead storage
Today's storage, plus the inflow and the rain that runs in, less the release, a day at a time; evaporation and seepage are left out. It is arithmetic on the figures you set, not a forecast.
Key facts
- River
- Ping River
- Location
- Sam Ngao District, Tak province
- Coordinates
- 17.2428, 98.9722
- Reservoir capacity
- 13,462 million m³
- Maximum capacity
- 13,462 million m³
- Dead storage
- 3,800 million m³
- Dam height
- 154 m
- Dam type
- Concrete arch dam
- Installed power capacity
- 779 MW
- Completed or opened
- 1964
- Operator
- Electricity Generating Authority of Thailand (EGAT)
Maximum capacity and dead storage from the Royal Irrigation Department
Frequently asked questions
- Where is Bhumibol Dam?
- Bhumibol Dam is in Sam Ngao District, Tak province.
- What is the water level of Bhumibol Dam today?
- Bhumibol Dam is 71.9% full, holding 9,683 million m³, as of 14 Nov 2026.
- How much water can Bhumibol Dam hold?
- The reservoir of Bhumibol Dam holds 13,462 million m³.
- When was Bhumibol Dam built?
- Bhumibol Dam was completed and opened in 1964.
- Who runs Bhumibol Dam?
- Bhumibol Dam is run by the Electricity Generating Authority of Thailand (EGAT).
- What is the Bhumibol Dam called in Thai?
- In Thai the Bhumibol Dam is เขื่อนภูมิพล.