North Fork Lewis River - Map Revision

FIRMs 53011C0061D and 53011C0062D

A hydraulic analysis was performed on a portion of the North Fork Lewis River, specifically between River Mile (RM) 7.69 and RM 8.61, utilizing new ground topography. The study resulted in revised floodplain boundaries (floodway, 100-year floodplain and 500-year floodplain) for FIRMs 53011C0061D and 53011C0062D in Clark County. The revised boundaries have been confirmed by the Federal Emergency Management Agency (FEMA).

PW Flood Map Revision

A report of the study and a working map of the upcoming changes can be found at the links below.