Flood Hazard Zones - FEMA Digital FIRM
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FP_DFIRM shows areas in Pima County prone to 100-year and shallow 100-year flood events. ZONES A, AE, AH, AO # and AO - ALLUVIAL FAN # comprise the extent of the 100-year floodplain. The tailing numbers in the ZONE AO strings indicate flood depth in feet. ZONE D shows areas that have not been mapped by FEMA (primarily federal and tribal lands). Zone X shows areas that have been mapped but are outside of the 500-year floodplain. ZONE X -SHALLOW 100-YEAR shows the extent of the shallow 100-year floodplain, the 500 year floodplain and Areas protected by levee. The layer FP_ZONEX provides subclassifications for these areas. Note, FP_LOMX can be used to augment FP_DFIRM for large-scale mapping. Also note, FP_DFIRM should be used in conjunction with FP_SS for the floodprone land brochure mailings sent out by PCRFCD on an annual basis. For general FIRM information: See more information. This layer is maintained by Pima County. Click here to visit Pima County's Open Data site. Click here to visit Pima County's GIS Library metadata. Purpose This layer was developed to show Flood Hazard Zones in Pima County, Arizona. Dataset Classification Level 0 - Open Known Uses This layer is not in any known applications. Known Errors A composite of FEMA maps with different scales and years. Contact Pima County - GISdata@pima.gov Update Frequency As Needed
