| Nong Han Lake | |
|---|---|
| Primary inflows | Nam Pung |
| Primary outflows | Huai Nam Khan |
| Basin countries | Thailand |
| Surface area | 125.2 km² |
| Average depth | 1.9 m |
The Nong Han (Thai: หนองหาน, pronounced [nɔ̌ːŋ hǎːn]) is a lake in the northeast of Thailand, located northeast of the town Sakon Nakhon. The lake covers an area of 125.2 km² and is the largest natural lake of northeast Thailand.
The main river feeding the lake is the Nam Pung, which originates in the Phu Phan mountains south of the lake. The outflow of the lake is the Huai Nam Khan to the southeast, which mouths into the Mekong. The average depth of the lake is 1.9 m, however during dry season the lake shrinks as some shallow area fall dry.
The lake is used for fishing. 20% of the fish caught in the lake is Bardus leiacanthus. Much of the shore has been converted into a public park for the nearby city.
Swimming in Nong Han is risky because of parasitic liver flukes.
See Nong Han Kumphawapi Lake for folklore sometimes associated with this lake.