This large reservoir covers an area of ​​more than 530 rai (approximately 222 hectares) and holds over 2.4 million cubic meters of water. It is 8 meters deep and located in the Wang Thong subdistrict, Na Wang district, Nong Bua Lamphu province. It is considered one of the reservoirs with breathtaking scenery, offering views of the surrounding mountains, beautiful flowers along the shore, and a peaceful atmosphere perfect for relaxation.

The area is also home to large flocks of birds that inhabit the Phu Cham Noi area. A popular activity on the Huai Pha Wang reservoir is rafting, offering a chance to enjoy the natural scenery. Currently, over 60 raft houses are available for tourists.

Huai Pha Wang Reservoir: A large reservoir in the Na Wang district with a tranquil atmosphere amidst nature, ideal for relaxing and photography.

The Tham Pha Chae cave: A true hidden gem of the province. It is a granite mountain with a natural opening, at the top of which sits a Buddha statue. Access is via approximately 528 steps.

Chato Café: A café with beautifully designed gardens reminiscent of a European ambience, ideal for dining and photography.

Ban Tat Hai Township: A township on the shores of Huai Bong Reservoir that offers boat tours. Main attractions include:

Tham Ya Lert Cave: A cave that serves as a spiritual anchor for the villagers and contains a Buddha statue for worship.

Konoi Island: An island in the middle of the water, usually connected to the mainland by a temporary bridge.

Phu Kao - Phu Phan Kham National Park: Includes a new attraction: the Pool-and-Skywalk.

From the top, there is a breathtaking view of the Ubolratana Dam. It is especially beautiful at sunset.