1. Short title This Act may be cited as the Flood Mapping Modernization and Homeowner Empowerment Pilot Program Act of 2018 . 2. Flood mapping modernization and homeowner empowerment pilot program (a) Definitions In this section: (1) Administrator The term Administrator means the Administrator of the Federal Emergency Management Agency. (2) Coastal The term coastal means, with respect to a unit of general local government, that the unit borders a body of water that— (A) is more than 2,000 square miles in size; and (B) is not a river. (3) Pelagic The term pelagic means, with respect to a unit of general local government, that— (A) the unit is a coastal unit; and (B) the body of water that the unit borders is— (i) an ocean; or (ii) a large, open body of water, including a bay or a gulf, that empties into an ocean. (4) Pilot program The term pilot program means the pilot program carried out by the Administrator under this section. (5) Urban flooding The term urban flooding — (A) means the innundation, by water, of property in a built environment, particularly in a densely populated area, that— (i) is caused by falling rain— (I) collecting on an impervious surface; or (II) increasing the level of a body of water that is located near that built environment; and (ii) overwhelms the capacity of drainage systems in the built environment, such as storm sewers; (B) includes— (i) a situation in which stormwater enters a building through a window, door, or other opening; (ii) the backup of water through a sewer pipe, shower, toilet, sink, or floor drain; (iii) the seepage of water through a wall or a floor; (iv) the accumulation of water on property or a public right-of-way; and (v) the overflow from a body of water, such as a river, lake, or ocean