SEMSWA’s Floodplain Program issues Floodplain Development Permits for projects in and around the 100-year floodplain.

Arapahoe County Floodplain Development Permit – To be used for all proposed projects located in the floodplain within Unincorporated Arapahoe County

City of Centennial Floodplain Development Permit - Terms and Conditions

 – To be used for all proposed projects located in the floodplain within the City of Centennial