1 county-level rule, plus city-specific rules for 2 cities in Boulder County, Colorado.
Verified from official government sources
Boulder County has participated in the FEMA National Flood Insurance Program (NFIP) since 1974 and enforces a Floodplain Overlay Zoning District covering the FEMA-mapped 1% annual chance (100-year) floodplain plus county-adopted floodplains for streams like Boulder Creek and the St. Vrain. The county holds a Community Rating System (CRS) Class 5 rating, giving NFIP policyholders in unincorporated areas a 25% premium discount.
2 cities in Boulder County have their own environmental rules rules. Each link goes to that city's dedicated page with code citations.
See every category we cover for Boulder County — parking, noise, fences, fires, animals, pools, and more.
Boulder County Ordinance Hub →