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2018 Adams County PMR

Revised Floodplain Mapping Effective December 2, 2021 

A Virtual Open House for the 2018 Adams County PMR was held on November 10, 2021 for portions of the City of Northglenn, City of Thornton and Unincorporated Areas of Adams County. 

For a copy of the Open House presentation, click here.

To view a recording of the presentation, click here.

Getting the Flood Hazard Area Delineation (FHAD) information on the Flood Insurance Rate Maps (FIRMs) helps residents and business owners make informed decisions about personal safety and protecting financial assets. Having current flood mapping also allows community planners, local officials, engineers, builders and others to make determinations about where and how new structures, subdivisions, developments, and redevelopments should be built to reduce risk of flood damage.

Final Flood Hazard Mapping

Preliminary Mapping Revisions

Grange Hall Creek FHAD

Estimate Project Timeline (subject to change)


Have more questions?

Your community Floodplain Administrator is the best source of information about flood risk.

Adams County
Greg Labrie

City of Northglenn
Pam Acre

City of Thornton
Jim Kaiser

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