Nong Han Lake

Nong Han Lake, also known as Nong Han Kumphawapi Lake, is a large shallow natural freshwater lake in Nong Han District, Udon Thani Province, northeastern Thailand. Covering about 12 square kilometers, it is the largest natural lake in the region and famous for the seasonal Red Lotus Sea. The lake supports local fishing, birdlife and agriculture, and offers boat tours, with archaeological evidence indicating prehistoric settlement around its shores.

Visitors can expect a broad, shallow freshwater lake with open water, marsh areas and lotus fields, surrounded by flat agricultural land and small villages. The main visitor area is the boat pier where flat-bottomed boats take visitors onto the lake for sightseeing among pink lotus flowers in season. The setting is tranquil and natural, with opportunities to observe waterbirds, local fishing activity and expansive lake views. Facilities are basic and focused around the pier area.

The lake basin and surrounding area show evidence of prehistoric settlement associated with the Ban Chiang archaeological culture, with ancient artifacts and burial sites found nearby. Historically the lake has served as a vital water source for agriculture and fishing communities in the Kumphawapi-Nong Han area.

The lake is central to local livelihoods for fishing and agriculture and is culturally known for the annual Red Lotus Sea phenomenon, which has become a symbol of Udon Thani tourism. Lotus flowers hold cultural value and the lake area is used for community activities and local festivals during the bloom season.