Flood is one of the hydrometerological disasters which is the most frequent event and a serious threat to humans and their environment, especially in urban areas. As a first step in flood disaster management, a susceptibility and risk analysis is needed to provides information physical-social interactions.

The main purpose of this study was to analyze flood susceptiblity and risk that used to identify the suitability of spatial pattern. Flood risk was done by flood susceptibility and vulnerability analysis. the floods susceptibility by using the information value method from flood events distribution data and five flood control variables, namely elevation, slope, distance to the river, Topographic Wetness Index (TWI), and land use.

As a result of the analysis show that TWI, elevation and distance to the river are the most accurate variables for estimating flood probability with 76% accuracy. A total of high flood risk areas, 96% area came into not suitable for spatial pattern. Areas that are not suitable are dominated by residential areas. Mitigation as part of the implementation of spatial pattern have been conducted by government of Tangerang Selatan City, especially on not suitable areas.

Keywords: Flood, Spatial Pattern, Susceptibility and Risk, Mitigation