Nogales is as concerned about new floodplain maps as they are about actual floods. City business leaders and officials are worried that a large part of the city including downtown areas are now in the flood plain, in part because of increasing runoff in the Nogales Wash from Mexico. [left, Morley Ave, Nogales, 7-12-08. Credit City of Nogales. right, Nogales Wash, 7-15-08. Credit Jesus Gomes, Nogales Fire Dept.]