Storage dam
Vajiralongkorn Dam
เขื่อนวชิราลงกรณ
Vajiralongkorn Dam is a storage dam on the Khwae Noi River in Thong Pha Phum District, Kanchanaburi province. Its reservoir holds 8,860 million m³. It was completed in 1984 and is run by the Electricity Generating Authority of Thailand (EGAT). Formerly named the Khao Laem Dam.
Reservoir storage today
96.1% of capacity at normal storage level
- Water in the reservoir
- 8,515 million m³
- Usable water
- 5,503 million m³ (94.1% of usable capacity)
- Inflow
- 5.3 million m³ a day
- Released
- 12 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
Down 41.9 million m³ over the last 7 days
475 million m³ more than on the same day last year
- 2026
- 2025
- Normal storage 8,860 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 fall by 6.7 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 7,910 million m³ (89.3% 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
- Khwae Noi River
- Location
- Thong Pha Phum District, Kanchanaburi province
- Coordinates
- 14.7994, 98.5969
- Reservoir capacity
- 8,860 million m³
- Maximum capacity
- 11,000 million m³
- Dead storage
- 3,012 million m³
- Dam height
- 92 m
- Dam type
- Concrete-faced rockfill dam
- Installed power capacity
- 300 MW
- Completed or opened
- 1984
- Operator
- Electricity Generating Authority of Thailand (EGAT)
Maximum capacity and dead storage from the Royal Irrigation Department
Frequently asked questions
- Where is Vajiralongkorn Dam?
- Vajiralongkorn Dam is in Thong Pha Phum District, Kanchanaburi province.
- What is the water level of Vajiralongkorn Dam today?
- Vajiralongkorn Dam is 96.1% full, holding 8,515 million m³, as of 14 Nov 2026.
- How much water can Vajiralongkorn Dam hold?
- The reservoir of Vajiralongkorn Dam holds 8,860 million m³.
- When was Vajiralongkorn Dam built?
- Vajiralongkorn Dam was completed and opened in 1984.
- Who runs Vajiralongkorn Dam?
- Vajiralongkorn Dam is run by the Electricity Generating Authority of Thailand (EGAT).
- What is the Vajiralongkorn Dam called in Thai?
- In Thai the Vajiralongkorn Dam is เขื่อนวชิราลงกรณ.