Abstract
Harmonizing development and environmental conservation has recently been realized as an important problem to our society. The environmental inpact assessment (EIA) is one of the most efficient ways to solve this problem. This study presents the attempt to restore a marshy valley, which is thought of as an important element of environmental conservation, through the EIA process applied to the Kanagawa University Hiratsuka Campus project. The result is that it is possible to restore a marshy valley on a developed slope, where there was a marshy valley of an abandanned paddy-field before development.