Floodplain Information & Services

Is my property in the floodplain?

Landowners can refer to the Interactive Map to determine their vicinity with regard to the floodplain. This delineation is based on the best information available. UDFCD assists local governments to identify and update flood risk potential and floodplain boundaries due to both natural and anthropogenic changes that occur over time. This is done by way of Flood Hazard Area Delineation studies (FHADs). FHADs are often performed in concurrence with updates to master drainage plan (MDP) studies.

From local floodplain study to FEMA FIRM

UDFCD works with the Federal Emergency Management Agency (FEMA) to get local FHAD data incorporated to the Flood Insurance Rate Maps (FIRMs), and Flood Insurance Studies (FISs) through the Physical Map Revision (PMR) process. There are several of the PMR projects under way in the Denver Metro Area. Click on one of the links below to get specific information for on-going PMR projects (large-scale FIRM and FIS updates). Please follow these Links if you have received a notification letter that the revised FIRMs indicate your property is in a high risk flood zone.

Fact Sheets:




Floodplain Studies:

Localized changes to FEMA FIRM

UDFCD works with the Federal Emergency Management Agency (FEMA) as a Cooperating Technical Partner (CTP), receiving annual grants from FEMA to review requests for Letters of Map Change (LOMC) to Flood Insurance Rate Maps (FIRMs) at the local level. See the LOMC Database for the status of specific projects and the LOMR/CLOMR submittal guidelines when submitting these items for review.

National Flood Insurance Program Support

UDFCD also provides assistance with floodplain regulation to assure conformance with FEMA National Flood Insurance Program (NFIP). When a community is in the NFIP it means that flood insurance is available for their citizens. The Community Rating System (CRS) is a program within the NFIP where, through floodplain management activities, local governments can help reduce the cost of flood insurance in their communities.

Resources for digital flood hazard area delineations and letters of map changes (FHADs and LOMCs):

LOMC Reports: