Project for Renovation of Seawater Supply System

OUTLINE OF THE PROJECT

In Tonga, where agriculture, forestry, and fisheries are the main industries, major coastal resources such as giant clams had declined due to increased fishing, and stock recovery through seed release was needed. The country's Fisheries Research Centre had been conducting research on aquaculture and stock enhancement, but because it drew seawater from inside the lagoon, water quality was unstable, and with aging equipment, deaths of reared organisms due to low salinity and water supply failures occurred frequently. This project installed a seawater intake system drawing water from the reef edge through an intake pipe, together with a pump house and related facilities, aiming to secure a stable supply of good-quality seawater, a stable supply of healthy seedlings, and more active research.