1. Introduction
Flooding is a severe hazard, which poses a great threat to human life and property. Generating flood extent maps during extreme flood events is vital for planning and efficient management of affected areas [1]. Detecting non-inundation areas are also equally important because these areas can serve as temporary shelters for the nearby affected areas. Several jurisdictions have begun considering the feasibility of relocating residential, commercial, and municipal structures, and the flood extent maps help to better understanding potential sites where relocation might be feasible.