Founded in 1937, Nishimatsu Construction Co., Ltd. has earned recognition worldwide as one of Japan’s leading general contractors. The Company is renowned for its taking on of new challenges and for its trend-setting development and introduction of sophisticated technologies in the fields of civil engineering and building construction.
    With its headquarters in Tokyo, Nishimatsu has a network of 13 branches and 41 sales offices around Japan, as well as overseas offices in 13 countries and territories. The Company is well-known for its expertise in planning, design and construction in a wide variety of fields such as marine and harbor projects, airport projects, highways, dams, tunnels, railways, high-rise buildings and power plants.
    Nishimatsu has an impressive record of contributions to social and economic development in Asia. In addition to a continuing presence in several Asian countries, the Company is currently involved in or has completed large-scale projects in Europe and Africa.
    Providing high-quality, timely and environmentally-friendly services at all stages of its various projects, Nishimatsu continues working to meet the demands of its clients and advance the frontiers of construction technology.

Konokawachi Dam Construction name: Konokawachi Dam Construction Project, Miyakonojo Basin water usage plan Location: Yamada-cho, Miyakonojo City, Miyazaki Prefecture, Japan Ordered by: Kyushu Regional Agricultural Administration Office, the Ministry of Agriculture, Forestry and Fisheries Project Overview The Konokawachi Dam project is part of a government-run enterprise Miyakonojo Basin water usage plan. The purpose of the dam is to ensure the irrigation water to the the Konokawachi River, the Oyodogawa River System. This rockfill dam has an impervious zone in its core. The height of the dam is 64.3m, the crest length is 409.7m, and dam volume is 1.5 million m3. Total reservoir capacity is 6.27 million m3. Dam construction began in 1999, and the filling of the dam was completed in August 2006. Completion of the entire project is scheduled for the end of fiscal 2009.