Urban waterfront has become an important location in the process of urban redevelopment when post-industrial cities face the impact of globalization and urban competition. Under this context, Erchong Floodway area shows the possibility of transforming the position from "the margin" to "the center." Along with the change of governmental discourse from the "delimitation" strategy of preventing flood to the "cross-border" plans of loving water, government positively establish the Taipei Metropolitan Park. Relationship between residents and the riverbank are becoming closer. Recently, on the basis of New Taipei City's new policies of "urban livability," the waterfront landscapes are intensively transformed. The Erchong Floodway area reveals the livable imagination. However, the residents still have the perception of "being marginal."