Storage dam
Khun Dan Prakan Chon Dam
เขื่อนขุนด่านปราการชล
Khun Dan Prakan Chon Dam is a storage dam on the Nakhon Nayok River in Mueang Nakhon Nayok District, Nakhon Nayok province. It is run by the Royal Irrigation Department. Built under a royal initiative. It is a large roller-compacted concrete dam.
Reservoir storage today
98.1% of capacity at normal storage level
- Water in the reservoir
- 220 million m³
- Usable water
- 215 million m³ (98.1% of usable capacity)
- Inflow
- 0.4 million m³ a day
- Released
- 0.4 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 2.2 million m³ over the last 7 days
2 million m³ less than on the same day last year
- 2026
- 2025
- Normal storage 224 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 hardly change
Over the next 90 days the reservoir reaches neither normal storage, a rule curve nor dead storage
In 90 days it would hold about 216 million m³ (96.5% 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
- Nakhon Nayok River
- Location
- Mueang Nakhon Nayok District, Nakhon Nayok province
- Coordinates
- 14.3119, 101.3209
- Maximum capacity
- 225 million m³
- Dead storage
- 4.5 million m³
- Dam height
- 93 m
- Dam type
- Roller-compacted concrete dam
- Operator
- Royal Irrigation Department
Maximum capacity and dead storage from the Royal Irrigation Department
Frequently asked questions
- Where is Khun Dan Prakan Chon Dam?
- Khun Dan Prakan Chon Dam is in Mueang Nakhon Nayok District, Nakhon Nayok province.
- What is the water level of Khun Dan Prakan Chon Dam today?
- Khun Dan Prakan Chon Dam is 98.1% full, holding 220 million m³, as of 14 Nov 2026.
- Who runs Khun Dan Prakan Chon Dam?
- Khun Dan Prakan Chon Dam is run by the Royal Irrigation Department.
- What is the Khun Dan Prakan Chon Dam called in Thai?
- In Thai the Khun Dan Prakan Chon Dam is เขื่อนขุนด่านปราการชล.