Floodplain maps impacting Longmont are being updated to reflect higher flood flows than the previous maps. These maps, which show a larger floodplain than the previous maps, will be presented for adoption to City Council in November. View these updated floodplain maps >
The peak season for creek flooding and flash floods in Longmont and surrounding areas runs from May through September. There is no way to predict how or when the next flood will occur, and it's unlikely that flooding will happen in the same way in the future. The magnitude, duration, scope and path of flooding will vary and cause different impacts. Floods can happen at any time, with little or no warning. The best course of action is to be alert and be prepared. Learn more >
Quick LinksAre You in a Floodplain?
Find out whether your property is at risk for flooding by checking our Floodplain Inquiry Map.
There's no way to predict how or when a flood will occur. Learn how to be alert and prepared.
Status & Monitoring
View live creek cameras, and find links to stream gage levels and weather forecasts.
Flood insurance is available for any property, regardless of whether it's within a floodplain. Learn what to ask your agent.
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 >
Click one of the logos below to learn more about citywide resilience efforts in the areas of preparedness, protection, and housing and community programs. Click on the Longmont Works!: Flood Recovery logo to revisit the 2013 flooding in words, pictures and videos.
City Manager Harold Dominguez and Public Works & Natural Resources General Manager Dale Rademacher discuss the role that flood protection efforts, including work on Resilient St. Vrain and bridge replacements, play in Longmont's Capital Improvement Program in the 2-minute video below.