Van Phong weir - part of the Van Phong Irrigation Component, in Binh Tuong Commune, Tay Son District - is a major irrigation project in Binh Dinh Province. In addition to ensuring irrigation water, participating in regulating traffic (the dam becomes a large bridge connecting the two banks of the Con River), this work is also a tourist attraction to attract many visitors of Tay Son district. The special feature of Van Phong is that it is a spillway designed in the style of PKW (Piano Key Weir), a design with a threshold that protrudes before and after the top of the dam, with large flow capacity and capacity to hold. water in high lake bed). With a length of nearly 550 m, Van Phong weir is recognized as the largest PKW dam in the world