Storage dam
Nam Oon Dam
เขื่อนน้ำอูน
Nam Oon Dam is a storage dam on the Oon River in Sakon Nakhon province. It is run by the Royal Irrigation Department.
Reservoir storage today
56.2% of capacity at normal storage level
- Water in the reservoir
- 292 million m³
- Usable water
- 247 million m³ (52% of usable capacity)
- Inflow
- 0 million m³ a day
- Released
- 0 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 1.1 million m³ over the last 7 days
188 million m³ less than on the same day last year
- 2026
- 2025
- Normal storage 520 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 292 million m³ (56.2% 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
- Oon River
- Location
- Sakon Nakhon province
- Coordinates
- 17.3039, 103.7558
- Maximum capacity
- 780 million m³
- Dead storage
- 45 million m³
- Operator
- Royal Irrigation Department
Maximum capacity and dead storage from the Royal Irrigation Department
Frequently asked questions
- Where is Nam Oon Dam?
- Nam Oon Dam is in Sakon Nakhon province.
- What is the water level of Nam Oon Dam today?
- Nam Oon Dam is 56.2% full, holding 292 million m³, as of 14 Nov 2026.
- Who runs Nam Oon Dam?
- Nam Oon Dam is run by the Royal Irrigation Department.
- What is the Nam Oon Dam called in Thai?
- In Thai the Nam Oon Dam is เขื่อนน้ำอูน.