Department Contact
Back to our Homepage
Navigation Bar Skip Navigation City Council Contact Us Search City Government

On The Side

More Information

","index.htm","breadcrumbs","breadcrumbs","breadcrumbs","0"); -->


Public Works & Natural Resources

Engineering Services

Floodplain Development Permit Application

Floodplain Definition - The lowlands adjoining the channel of a river, creek, stream, or other water course, lake, or body of standing water which may be or has been covered by floodwater.

This permit is required for any construction within 100-year floodplain boundaries. 100-year floodplain is the area adjoining a river, stream, or watercourse covered by water in the event of the 100-year flood (a 100-year event is one that has a 1/100th chance (1% chance) of occurring in any one year.

Floodplain Development Permit application fee is $100 per the City's Land Development Code Title 15, Appendix A - Application Fees. The completed Floodplain Development Permit Application should be submitted to the City of Longmont for review and approval before issuance of any construction permit. Development plans should show 100-year floodplain boundaries delineation consistent with the Flood Insurance Rate Map (FIRM).

The following documentation below is available in PDF file format. Download the FREE Acrobat Reader to view these file types.

Floodplain Development Permit Application



The public is invited to review the newly updated City of Longmont floodplain map

Please join us Thursday, March 15 at 6 pm in the City Council Chambers located at 350 Kimbark St. This is the first update of the map since 1995 and the new map is now digitized provides the most accurate depiction of which structures will be affected in the event of a flood. Representatives from the City of Longmont, Colorado Water Conservation Board (State Drainage Engineers) and Federal Emergency Management Agency (FEMA) will be there to answer any questions about the mapping process and flood insurance and policies. Call David at 303-651-8328 if you have any questions prior to the meeting.


Public Works & Natural Resources

Updated 03/08/12