Storage dam
Tha Thung Na Dam
เขื่อนท่าทุ่งนา
Tha Thung Na Dam is a storage dam on the Khwae Yai River in Mueang Kanchanaburi District, Kanchanaburi province. Its reservoir holds 54.8 million m³. It was completed in 1981 and is run by the Electricity Generating Authority of Thailand (EGAT). The downstream dam of the Srinagarind Dam.
Reservoir storage today
96.1% of capacity at normal storage level
- Water in the reservoir
- 48.1 million m³
- Inflow
- 23.7 million m³ a day
- Released
- 20 million m³ a day
As of 13 Nov 2026 Daily figures from the National Hydroinformatics Data Center (ThaiWater)
Storage this year and last
Down 0.3 million m³ over the last 7 days
7.3 million m³ more than on the same day last year
- 2026
- 2025
- Normal storage 50.1 million m³
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 3.7 million m³ a day
- Reaches normal storage in 1 days (14 Nov 2026)
In 90 days it would hold about 384 million m³ (766.4% of capacity)
- Actual storage
- Projected
- Normal 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
- Khwae Yai River
- Location
- Mueang Kanchanaburi District, Kanchanaburi province
- Coordinates
- 14.2325, 99.2336
- Reservoir capacity
- 54.8 million m³
- Dam height
- 30 m
- Dam type
- Concrete gravity dam
- Installed power capacity
- 38 MW
- Completed or opened
- 1981
- Operator
- Electricity Generating Authority of Thailand (EGAT)
Frequently asked questions
- Where is Tha Thung Na Dam?
- Tha Thung Na Dam is in Mueang Kanchanaburi District, Kanchanaburi province.
- What is the water level of Tha Thung Na Dam today?
- Tha Thung Na Dam is 96.1% full, holding 48.1 million m³, as of 13 Nov 2026.
- How much water can Tha Thung Na Dam hold?
- The reservoir of Tha Thung Na Dam holds 54.8 million m³.
- When was Tha Thung Na Dam built?
- Tha Thung Na Dam was completed and opened in 1981.
- Who runs Tha Thung Na Dam?
- Tha Thung Na Dam is run by the Electricity Generating Authority of Thailand (EGAT).
- What is the Tha Thung Na Dam called in Thai?
- In Thai the Tha Thung Na Dam is เขื่อนท่าทุ่งนา.