현대 사회에서의 항만공간은 과거와는 달리 단순히 항구로써의 기능만을 위한 공간이 아닌 주거, 레저, 관광 등 다양한 기능이 복합화 되고 있다. 그에 따라 더욱 많은 사람들이 밀집하는 공간으로 변모해 가고 있다. 반면 항만 공간은 지형적, 환경적 특성 상 재해에 취약한 공간이기도 하다. 하지만 아직까지 국내에서는 방재·도시계획이 명확히 자리 잡고 있는 실정이 아니다. 따라서 항만공간의 특성을 감안한 방재·도시계획을 강화하고, 이를 통해 안전성을 확보할 필요가 있다.

The objectives of this study were to investigate the physical, chemical, and structural characteristics of the stream, especially Mugeo and Yeochon which are being changed to ecological stream by Ulsan city, and to acquire the considerations such as the planning element and plan criteria of the streams for making ecological stream system. Water quality, water quantity, vegetation, instream structures and facilities, and land usage of the streams were investigated and the build up capabilities of ecological stream for the two streams were also analyzed. Planning elements for restoration to ecological stream included physical and biological purification methods in water quality, short term water acquire alternatives in water quantity, and vegetation recovery plan and improvement of habitation environment in ecological system, respectively. Planing elements in physical structures and facilities also included recovery of concrete levee and removal and recovery of covered channel.