The city has challenged a 100-year floodplain map prepared by the Federal Emergency Management Agency that adversely affects Canyon Acres property owners.
FEMA's map is based on aerial photographs of areas that generate enough run-off to create a problem in a flood. City officials claim the map relied on outdated information and have submitted a hydrology study to make their case.
"The map was done on an extremely broad-brushed level," said City Engineer Steve May, director of the Public Works Department.
FEMA's new map increased the number of homes in Canyon Acres that are within its mapped 100-year floodplain. Letters have been sent to 37 property owners, as required by the agency.