The purpose of this research was to investigate water spaces such as marshes and watercourses, especially focusing on methods to establish eco-ponds. Many aqua-ecosystems have been filled up or destroyed in the process of rapid industrialization and urbanization in the cities. This inquiry was done by comparing, studying and analyzing existing ponds and studying documents on the introduction and methods of making eco-ponds. Existing ponds were put into three categories as the either eco-pond, man-made/natural ponds, or man-made ponds. Three instances were selected for each category, totaling nine. Data on the size and shape, depth, waterproofing techniques, water supply, plants and planting plan, and the maintenance of the ponds was collected and compared. The following are conclusions based on comparing, studying and analyzing these existing ponds, and studying documents on the introduction and methods of making eco-ponds. ${cdot}$ It is noteworthy that different environments and depths must be provided because these are main variants contributing to attracting plants in the ponds. ${cdot}$ In these places plants emerged, such as, floating-leaved plants, free-floating planktonic plants, submerged plant etc, in the different water level zones, once these various conditions were provided. ${cdot}$ Various spaces can be used for shelter, places for relaxation and habitation. ${cdot}$ After establishing a pond, routine maintenance is necessary for preventing eutrophication. However the minimal possible management should be done to maintain a natural status.