The environment around the Genbe River which flows through Mishima, Shizuoka Prefeture, has been in decline since 1955, but recent conservation efforts have restored its abundant waterside areas. However, a fresh concrete spill in 2007 had a disastrous impact, wiping out many of its living creatures. Environmental monitoring was conducted over the three years since the accident focused on Japanese eight-barbel loaches, a fish species symbolic of fresh water streams. It clarified that artificial restoration measures are needed, and currently an ecosystem survey of fish and other aquatic organisms is being carried out in order to formulate an environmental restoration plan, and create the base materials needed to do this, such as a manual for citizen-led maintenance and management. This project will also involve assessing the impact of pilot restoration efforts, issuing a guide to rare species, establishing an aquarium, cultivating 'Genbe River Eco-Rangers' to manage and maintain habitats, and other initiatives.