Flood Information
Quick Links
Are You in a Floodplain?
FEMA (Federal Emergency Management Agency) has released its preliminary Flood Insurance Rate Maps (FIRMs) for St. Vrain and Left Hand Creeks. Visit Understanding the Floodplain Maps on Engage Longmont to learn more about these maps and how they may affect your property's flood insurance rates.
Work has already begun to update the new floodplain maps (Preliminary FIRMs) with the projects that have been completed along the St. Vrain Creek. The first Letter of Map Revision (LOMR #1) was submitted by the City of Longmont in summer 2020. Learn more about LOMR #1.
Check your property's flood zones on Floodplain Inquiry Map. (This link will take you to a page that explains how to use the map and what the various map zone colors mean. From there, you can click to open the map.)
Free viewers are required for some of the attached documents.
They can be downloaded by clicking on the icons below.
Flood Insurance
Flood insurance is available for any property, regardless of whether it's within a floodplain. Learn what to ask your agent.
Flood Preparedness & Safety
There's no way to predict how or when a flood will occur. Learn how to be alert and prepared.
Flood Awareness Brochure
If your Land is in the 100-Year Floodplain, you and your property are at risk. Find more information here about determining your flood risk, protecting your property and changing requirements for flood insurance.
Protect Your Property from Flooding
The best time to protect your home from future flooding is now. Review these resources to find ways to improve your property's resilience to flooding.
Creek Status & Monitoring
View live creek cameras, and find links to stream gage levels and weather forecasts.
FAQs - Flood
Read the answers to some frequently asked questions about floods and floodplain management.
2013 Flood
From Sept. 11-15, 2013, Longmont experienced the most devastating flash flood event in its history. Learn about the catastrophic damages to city infrastructure, the resilience of the community and the innovative efforts to rebuild and revitalize.
Ten Years After the Flood
A Story of Recovery and Resilience
Longmont is working on many ways to improve our community’s resilience to future flooding (as well as other emergency events), from building infrastructure to putting place emergency communication plans to meeting our neighbors.
Infrastructure and floodplain improvements will take several years to fully implement and will have lasting positive effects on our community. Other efforts, such as improving communication within and between neighborhood groups and enhancing cultural awareness and competency, have more immediate impacts on community resilience. Learn more >
