7 kilometres West of Tam Ky, Phu Ninh Reservoir is an irrigation works with capacity for about half of billion cubic metres of water and a surface of 3.433 hectares. This work was started in 1977 and finished ten years later. Apart from the advantages for developing irrigation, aquiculture, power-electricity, forest, agriculture and providing water for recreation....

Phu Ninh is also an ideal ecotourism area with cool air and diversified fauna all year round. There are 14 species of animal recorded in the Red Book. From this high site, tourists can view the huge reservoir with many islands covered mountains, and green forest. Tourists can take a boat around the islands enjoy the poetic and impressive beauty among the vast green forest areas. The Chap Tra valley is a mineral resource found in the middle of the quiet lake. This mineral resource is used for medical treatment such as bile, liver, and stomach diseases...

Now, Phu Ninh Reservoir is developing tourism through a variety of attractive ecotourism ideas: excursion, picnic, fishing, hot water bathe and medical treatment with hot water.