Floodplain Development Permits

This webpage provides information on obtaining:

General Floodplain Development Permit (General FDP 2016-1)

The Boulder County Engineer has issued General Floodplain Development Permit (FDP) 2016-1 in accordance with Section 4-404.1 of the Boulder County Land Use Code.

View the General Floodplain Development Permit (FDP) 2016-1

The General FDP covers projects and uses in the FO District that have been determined by the County Engineer to meet the applicable criteria set forth in Section 4-404.1(B) of the Boulder County Land Use Code, which, among other criteria, includes those projects and uses that have been determined to have minimal or no impact on flood hazards. 

The General FDP allows certain projects and uses to take place without the need for an Individual Floodplain Development Permit. Some projects permitted by the General FDP still require notification of the County Engineer as described below. 

The two-week comment period for General FDP 2016-1 ended Monday, Oct. 31, 2016. Comments were received and incorporated, if applicable. General FDP 2016-1 is effective as of Nov. 2, 2016. 

Please submit any questions or comments on General FDP 2016-1 via email. 

FOR PROJECTS UNDER THE GENERAL FDP THAT REQUIRE NOTIFICATION BE SUBMITTED TO THE COUNTY ENGINEER

  • Notification can be submitted by:
    • Email
    • Mail
      • Boulder County Transportation - Floodplain Management
      • ATTN: General FDP Notifications
      • P.O. Box 471
      • Boulder, CO 80306
  • Notification submittals, at a minimum, must include the following information:
    • Project description, including materials to be used
    • Location description with accompanying location map
    • Site Plan
    • Photographs of the project area (optional)
Boulder County will respond in writing no later than 14 days following submittal of notification and confirm whether or not a project is covered under the General FDP, whether more information is required in order to make a determination, or whether the project is NOT covered by the General FDP and submittal of an application for an Individual FDP is required. 

Individual Floodplain Development Permit

An individual floodplain development permit is required for all development in the floodplain.

Floodplain development permits:

  • must be obtained from the Transportation Department-Floodplain Management Program, before the start of construction,
  • require an individual floodplain development permit fee is $50; the fee is waived for projects directly related to the September 2013 flood event until further notice

Individual Floodplain Development Permit Application

Floodplain Management provides more information on floodplain regulations, drainage, flood preparations, maps and requirements. To check to see if your property is within a regulatory floodplain go to Boulder County e-mapping (searchable property information).

Floodway Review 

A Boulder County Floodway Review is required for any project in a county-administered floodway that results in 100-year surface elevation increases between 0.00 and 0.5 foot (existing vs. proposed conditions). For increases in a county-administered floodway that are greater that 0.5 foot, an approved Conditional Letter of Map Revision (CLOMR) is required prior to permitting. In FEMA-administered floodways, a CLOMR is required for projects that result in any increase (greater than 0.00) in 100-year water surface elevations prior to permitting.

2013 Flood-Related Bridge Construction

The September 2013 flood damaged or destroyed many private crossings throughout Boulder County. For more information about permit requirements, please visit the Bridge Construction Permit Requirements page.

2013 Flood-Related Stream Restoration

The September 2013 flood impacted by the hydraulic and ecological conditions of many watersheds throughout the county. Visit the Stream Restoration Permit Requirements webpage for more information. 

Interim Floodplain Map

Interim floodplain maps based on information obtained after the September 2013 flood are now available. There are currently no floodplain development permit requirements for properties that are on the interim floodplain. However, Boulder County recommends considering the interim floodplain map when making development decisions.

Contacts

Floodplain Administrator
303-441-3900
email
Boulder
2525 13th Street, Suite 203
Boulder, CO 80304
Map & Directions
Hours: 8 a.m.-4:30 p.m. M-F
Mailing Address
Main: PO Box 471
Boulder, CO 80306-0471
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