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August 1, 2018

Media Contacts:

Kelly Watson, Boulder County Transportation, Floodplain Specialist, 720-564-2652

Andrew Barth, Boulder County Transportation, Communications, 303-441-1032

Updates to the Boulder County Regulatory Floodplain

The Boulder County Official Floodplain Map is available online

Boulder County, Colo. - Boulder County Transportation received approval from the Board of County Commissioners for Docket Z-17-0002: Zoning Map Amendments to the Floodplain Overlay District Based on CHAMP Phase II Floodplain Mapping and other best available information after a public hearing on July 24, 2018. The resulting floodplain map amendments include the following changes to the Boulder County Official Floodplain Map:

Stream Reaches with Updates Effective Aug. 1, 2018

  • Fourmile Creek
  • Geer Canyon
  • Gold Run
  • Left Hand Creek
  • Little Thompson River
  • Lower Fourmile Canyon Creek (below Anne U. White trailhead)
  • James Creek
  • North St. Vrain Creek (at Longmont Dam Road)
  • St. Vrain Creek Floodway

Stream Reach with Updates Effective Oct. 1, 2018

  • Lower Boulder Creek Floodway (Kenosha Rd./115th St. to East County Line Rd.)

The Boulder County Official Floodplain Map is available at\2JUvl6g and from the Boulder County Floodplain Management webpage.

Additional information is available on the Land Use Docket
Z-17-0002 webpage
and the Floodplain Remapping Project webpage