La Crosse home owners now have a better idea whether or not their home is in a flood plain. Flood Hazard Map The map shows any structures in the city’s floodplain. and hazardous flood areas. The interactive map allows residents to click on specific places to see its flood elevations and lowest adjacent grades surrounding the property. Members of the committee say the map looks at what risks property owners might be facing. You can find the map at the city of La Crosse dot org. under the flood information tab.