Storage dam
Kiew Kho Ma Dam
เขื่อนกิ่วคอหมา
Kiew Kho Ma Dam is a storage dam on the Wang River in Lampang province. It is run by the Royal Irrigation Department.
Reservoir storage today
95.8% of capacity at normal storage level
- Water in the reservoir
- 163 million m³
- Usable water
- 157 million m³ (95.6% of usable capacity)
- Inflow
- 0.9 million m³ a day
- Released
- 0.1 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 3 million m³ over the last 7 days
33.2 million m³ less than on the same day last year
- 2026
- 2025
- Normal storage 170 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 0.8 million m³ a day
- Reaches normal storage in 9 days (23 Nov 2026)
- Goes above the upper rule curve in 9 days (23 Nov 2026)
- Reaches its largest capacity: water would go over the spillway in 58 days (11 Jan 2027)
In 90 days it would hold about 209 million m³ (122.7% 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
- Wang River
- Location
- Lampang province
- Coordinates
- 18.8096, 99.6415
- Maximum capacity
- 209 million m³
- Dead storage
- 6.2 million m³
- Operator
- Royal Irrigation Department
Maximum capacity and dead storage from the Royal Irrigation Department
Frequently asked questions
- Where is Kiew Kho Ma Dam?
- Kiew Kho Ma Dam is in Lampang province.
- What is the water level of Kiew Kho Ma Dam today?
- Kiew Kho Ma Dam is 95.8% full, holding 163 million m³, as of 14 Nov 2026.
- Who runs Kiew Kho Ma Dam?
- Kiew Kho Ma Dam is run by the Royal Irrigation Department.
- What is the Kiew Kho Ma Dam called in Thai?
- In Thai the Kiew Kho Ma Dam is เขื่อนกิ่วคอหมา.