With global warming and extreme weather, flooding has been an increasingproblem in many urban cities. Within the scope of a highly urbanized city, there islimited open green space that could be designed for flooding protection. OcmulgeeNational Monument, in Macon, GA, is an important cultural heritage site and a natural floodplain, and it experiences periodic flooding. Applying the flood resilience concept and GIS technology, this thesis analyses the hydrological dynamics of OcmulgeeNational Monument and recommends an intervention that can help mitigate urban flooding issues in this area while incorporating aesthetics, and thereby preserving the cultural heritage. Exploration was conducted through two case studies and projective designs.