Floodplain Management

FEMA Issued Preliminary Flood Map

The Federal Emergency Management Agency (FEMA) has issued new preliminary Flood Insurance Rate Maps (FIRMs) and a Flood Insurance Study of Rockville. These preliminary maps reflect the flood risk based on the latest high-quality data and have been released for public review and comment.

Rockville Participates in the National Flood Insurance Program

Rockville participates in FEMA’s National Flood Insurance Program (NFIP) so that residents are eligible to purchase federally backed flood insurance as financial protection against flood losses. Jurisdictions must adopt Flood Insurance Rate Maps (FIRMs) to participate in the NFIP. This flood insurance may be purchased by anyone within Rockville regardless of their property or structure being within a floodplain.

View the New Map

Still have questions? Contact: 

Environmental Management
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240-314-8874
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111 Maryland Ave.
Rockville, MD 20850
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Monday - Friday
8:30 a.m. - 5 p.m.


Public Information Sessions

Local government staff, along with Maryland Department of the Environment and FEMA officials, are collaborating to provide three optional information sessions for property owners and residents affected by the proposed map amendments. Topics will include the mapping process, appeal process, flood insurance, and potential mitigation opportunities. 

View the presentation slides from the Feb. 10 information session.

Register for an Information Session

Appeals and Comments

If you feel there has been a map error, you can file an appeal or comment during the 90-day Public Appeal Period from approximately May through August, 2024.

  • Appeals address concerns that the modeling or data used to create the map is technically or scientifically incorrect and must be accompanied by technical documentation, such as surveys, topographic maps, engineering studies, data, etc. Appeals should also demonstrate that better methodologies, assumptions, or data exists.
  • Comments address a perceived map error such as an incorrect street name, city limit boundary, etc. A detailed description of the issue should be submitted. Supporting documentation may not be required.

If you believe a structure on your property has been incorrectly mapped into a Special Hazard Flood Area (SFHA), please complete the SFHA Appeal Worksheet that includes instructions on obtaining the recommended documentation. Once you fill out and save the worksheet, upload it with your appeal or email the worksheet to floodassistance@rockvillemd.gov.

FEMA’s Elevation Certificate process (FEMA Form FF-206-FY-22-152) can also be used to certify building elevations (lowest floor or lowest adjacent grade) in order to support an appeal. The form must be prepared and certified by a professional. Details on the process can be found on FEMA’s website, including the Elevation Certificate form.

Submit an Appeal or Comment

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