Slow mobility spaces on the waterfront are different from urban roads, which are functionally used for movement and traffic. It contains a set of various functions for entertainment, sports, nature viewing, tourist attractions, etc., and is also public places for users to perform slow activities located in the spatial scale of the waterfront and distributed along the facade, connecting many green squares, parks and gardens overlooking the waterfront, facilities and services supplementaryt The research studies the waterfront and the slow mobilityon it, the behavioral characteristics of the slow mobility, like Walker activity, Slow mobility speed, Characteristics of the movement period, The length of the movement distance, and Movement pathand the most important features specific to it, in addition to identifying multifunctional useson the waterfront areas such as environment, economy, culture, history and Aesthetics,as well as its development, goals and factors of the development process that help in the development process.. Some of waterfronts in Egypt are suffering from deteriorating conditions, takingAl Mashaya area in Mansoura city in Egypt as a case study it is located on Nile River. The existing situation of that waterfront area was studied and some elements were analyzed through visits, According to its multifunctional usesand slow mobility behavioralcharacteristics, At the end of the research, a proposed development plan for Al Mashayaarea was developed based on two axes, the first is to divide the area into six parts, and the second is to apply the behavioral characteristics of slow mobility.