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County consultants propose new local floodplain map for Tusayan, recommend ordinance change
Summary
Consultants working with Coconino County presented a locally derived floodplain map for Tusayan and urged the county to revise its ordinance so both FEMA special flood hazard areas and the new local floodplain would be treated as a single regulatory floodplain.
Consultants working with Coconino County presented a locally derived floodplain map for the Tusayan area and recommended the county revise its floodplain ordinance so the county will treat both FEMA special flood hazard areas and the local floodplain as a single “regulatory floodplain.”
Ian Sharp, a civil engineer with JE Fuller, said he led hydrology and hydraulic modeling for the project and that the team produced discharge estimates and flood inundation mapping suitable for submission to FEMA. "My name is Ian Sharp, civil engineer with JE Fuller. Been with JE Fuller for 20 years, and most of my career has been this right here," Sharp said when he introduced the technical work.
The consultants showed two footprints: the existing FEMA Zone A, which they described as an older, smaller boundary, and a larger locally modeled floodplain that includes tributaries and additional inundation areas. Sharp said the older Zone A delineations were likely done on paper in…
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