Floodplain Remapping Project

Floodplain Remapping Project

VIEW MAPS & PROVIDE FEEDBACK

OFFICIAL FLOODPLAIN MAP

The interactive webmap (use the button above) shows detailed flood risk zones and related FEMA map amendments or revisions that are currently regulated throughout unincorporated Boulder County as Floodplain Overlay Zoning District. This map will update as new FEMA maps become effective throughout Boulder County and as the Boulder County Board of County Commissioners (BOCC) adopts best available information.

VIEW PROPOSED CHANGES TO FLOOD RISK ZONES

Visit the interactive webmap (use button above) to view the proposed changes to flood risk zones that are currently under review by Boulder County via Land Use Docket Z-19-0001 based on receipt by Boulder County of FEMA’s Preliminary Flood Insurance Rate Maps (FIRMs) for all stream reaches in the Colorado Hazard Mapping Program (CHAMP), and on best available information for Rock Creek and Coal Creek. In CHAMP reaches, staff have proposed that the Preliminary FIRMs supersede and replace the draft CHAMP floodplain maps that were adopted as Boulder County Floodplain and Floodway in 2017 and 2018. The differences between the Premliminary FIRMs and the draft CHAMP maps are largely based on clean up and smoothing of boundaries of areas already being regulated as the Floodplain Overlay (FO) district. Residents and property owners may comment on maps (button above). Staff will address comments before presenting zoning map amendments to the Boulder County Board of County Commissioners at their Thursday, Dec. 12, 2019 public hearing with a recommendation for approval.

NEW INFORMATION

ABOUT THE CHAMP MAPS

Floodplain remapping stream reaches for 2019-2020 effort

Draft map data and related flood studies for the CHAMP– studies (shown above) were adopted by the Board of County Commissioners (BOCC) through Docket Z-17-0001 and Docket Z-17-0002. In September 2019, FEMA released Preliminary Flood Insurance Rate Maps (FIRMs) for the same CHAMP reaches, refining the draft maps previously released. Boulder County is currently considering local adoption of the Preliminary FIRMs via Docket Z-19-0001 to allow the county to base floodplain regulations on the best available data. Later, upon final FEMA approval and adoption, the floodplain mapping will become effective for both regulatory and flood insurance purposes.

Please contact the Floodplain Management Team (info below) with questions or to learn more about the floodplain mapping changes.

Contact Us

Floodplain Administrator Contact

Floodplain Administrator

303-441-3900
Email

Floodplain Remapping Program Contact

Email

Location

2525 13th Street
Boulder, CO 80304

Map & Directions

Hours: 8 a.m. - 4:30 p.m. M-F

Mailing Address

P.O. Box 471
Boulder, CO 80306