Interim floodplain mapping available for unincorporated Boulder County properties

Thursday, July 31, 2014

Boulder County, Colo. – Boulder County has updated the online floodplain map to include the interim floodplain map created by the Colorado Water Conservation Board (CWCB) after the 2013 Flood. To view a specific property’s location in relation to the interim map, search for the address on the Boulder County Assessor’s property search tool. At this time, Boulder County is using the interim floodplain map for information and guidance only. 

The 2013 Flood altered the landscape of the creeks and surrounding areas. The county, in conjunction with the CWCB, is in the process of determining where new floodplain maps are necessary for the safety of residents and for floodplain management purposes. Eventually, new floodplain maps will be submitted to FEMA for approval. 

“It may take several years to have new FEMA-approved maps. The interim floodplain map gives residents information they can use now to make more informed decisions about rebuilding after the flood or other development on their properties,” said Varda Blum, Floodplain Administrator for Boulder County. 

Boulder County floodplain development permits are not required for development on properties that are on the interim floodplain map. However, Boulder County recommends residents consider the interim floodplain information when making decisions about development on their property. 

“Residents may be able to protect their property from future flood events and reduce future flood insurance costs by incorporating measures to protect their home, even if these measures are not currently required,” said Blum. 

In most cases, flood insurance is not required for properties on the interim floodplain map. The property owner’s mortgage lender or insurance company makes the final determination regarding flood insurance requirements. However, flood insurance is available for all home owners in Boulder County. More information can be found at  

Properties that are on existing regulatory floodplain maps must continue to comply with all FEMA and county floodplain regulations.

For more information visit the county’s Floodplain Management site, call 303-441-3900 or email

Gabi Boerkircher
Public Information Specialist

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