East Flood Canal is one of the manmade waterfront public open spaces in Jakarta which is often visited by residents. The existence of the public open space is very important for society. The purpose of the study is to identify the utilization pattern of public open space on canal banks and analyze the problems related to the utilization of this space. Method used place-centered mapping to identify physical characteristic of public open space and patterns of activity that occur in the study area. The study is conducted in the segment East Flood Canal on Jl. Kolonel Sugiono, Duren Sawit sub-district, East Jakarta. The result is the pattern of utilizing public open space in the four zones in the East Flood Canal segment is linear because the pattern follows the physical setting of pedestrian circulation paths and bicycle lanes. This study suggests both two circulation pathways (pedestrian and bicycle) need to be designed continuously along the canal and equipped with adequate facilities. Improvement of the planning, design, and maintenance of public open space in the segment of canal will have many benefits to increase social interaction, recreational activities, educational communication, and also a concern for the hydrological aspects of the canal.