Proposed Jefferson County Flood Maps Reflect Changes to Local Flood Risk, Insurance Rates

Release Date Release Number
Release Date:
June 16, 2021

DENVER – Unincorporated Jefferson County and the Cities of Lakewood, Edgewater and Wheat Ridge flood insurance rate map updates for Sanderson Gulch and Sloan’s Lake Drainageway and its Tributaries are nearing completion. The new maps will provide these areas with more accurate flood risk information that can help local officials and residents make informed decisions about reducing flood risks and purchasing flood insurance.

The mapping project is a joint effort between Unincorporated Jefferson County, the Cities of Lakewood, Edgewater, and Wheat Ridge, and the Mile High Flood District (MHFD). It is part of a nationwide effort led by FEMA to increase local knowledge of flood risks and support actions to address and reduce those risks.

Before new flood insurance rate maps become effective, there is a 90-day appeal period during which local residents and business owners can provide additional data for consideration before the maps are final. This appeal period starts on June 24, 2021, and ends September 22, 2021.

Officials encourage residents and business owners to review the proposed flood insurance rate maps to learn about local flood risks, potential future flood insurance requirements, and any concerns or questions about the information provided.

Appeal packages may be submitted during the 90-day appeal period. The sole basis of the appeal must include the possession of knowledge or information indicating that the proposed flood hazard determinations are scientifically and/or technically incorrect.

For further details on this process, contact information, and to view the preliminary mapping, visit Preliminary mapping also may be viewed on FEMA’s Map Service Center by visiting For questions, please contact the MHFD or your local floodplain administrator.

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