Following the 2013 flood, the Colorado Water Conservation Board (CWCB) initiated a program to re-map the predicted 1% annual chance flood zone (100-year floodplain) of the most affected waterways. The program was called the “Colorado Hazard Mapping Program,” or CHAMP. Visit the
CHAMP website to learn more.
In September 2019, FEMA released Preliminary Flood Insurance Rate Maps (FIRMs) for the same CHAMP reaches, refining the draft maps. The Preliminary FIRMs were adopted by the Town of Lyons Board of Trustees, replacing the draft map data, to allow the county to base floodplain regulations on the best available data. In 2021, upon final FEMA approval and adoption, the floodplain mapping will be formalized for flood insurance purposes.
Please contact
floodplain@townoflyons.com with questions or to learn more about the floodplain mapping changes.