CLOMR – 2017


What is a CLOMR

A Conditional Letter of Map Revision, or CLOMR, is FEMA’s comment on a proposed project that would affect the hydrologic or hydraulic characteristics of a flooding source.

A CLOMR does not revise the current National Flood Insurance Program map (NFIP). It just outlines whether the project, if built as proposed, would be recognized by FEMA.

Building permits cannot be issued based on a CLOMR, because a CLOMR does not change the NFIP map.

Once a project has been completed, the community must request a revision to the Flood Insurance Rate Map (FIRM) to reflect the project. “As-built” certification and other data must be submitted to support the revision request.

Does this affect my flood insurance?

No, not yet. The FM Area Diversion Project is a federal project that will provide certifiable flood protection for hundreds of thousands of people in the Fargo and Moorhead area.

The Project is being designed to prevent impacts from a 100-year flood event. Once built, it will remove the requirement of having flood insurance for many people, but the requirement must be in place until the Project is complete and FEMA agrees that flood protection is certified.

Receiving a CLOMR is the first step in certifying property is protected from a 100- year event.

What happens after a CLOMR?

The FM Area Diversion Project started construction in March of 2017. It will be operational in 2025. Once it’s ready to operate, the Flood Diversion Board of Authority will ask FEMA to look at their flood map and lift the insurance requirement because the Project provides certifiable protection. The requirement can be lifted with a Letter of Map Change or LOMC

APPENDIX A – FEMA and USACE Coordination Plan


APPENDIX B – Memorandums for Record (MRFs)


Appendix H – Credit to Existing Levees

Appendix I – Geotechnical

Consultant Reports

APPENDIX D – Supplementa EA

APPENDIX E – ESA Compliance

APPENDIX F -PFSAA and Wild Rice River Micrositing

APPENDIX G – Diversion Design

Diversion Inlet – Channel

Diversion Reach 1 – Reach 1 – Bridge

Reach 1 – Channel

Diversion Reach 2-Channel

Diversion Reach 3 – Bridge Channel

Diversion Reach 4″ – Bridge

Reach 4 – Channel

Diversion Reach 5 – Bridge

Reach 5 – Channel

Reach 5 – Channel

Diversion Reach  6 – Bridge Channel

Maple River Aqueduct- Channel

Reach 19- Bridge



Plans and Specs – PDF

WP-43C-DDR_Post 95%

Plans and Specs – PDF

WP-43E.2.C-Plans and Specs – PDF



Pland and Specs – PDF

Appendix I – In-Town Levees Design

2nd Street downtown-WP42A1_a3






4th Street Levee

5909 Road Raise

Dike Improvements


El Zagal – Phase 1

El Zagal – Phase 2

Flow Through Town Report 02120716

Horn Park LOMR

Mickelson Extension


Moorhead Country Club LOMR

Ridgewood VA LOMR Levee Certification Submittal

Levee Certification Submittal – Additional Data

Woodlawn Park LOMR

Appendix J – Comstock Levee Design

Appendix K – Levee Profiles-Freeboard

Diversion Channel

In-Town Levees


Appendix L – Hydrology

Appendix M – Hydraulics

]Existing Conditions Model (ECMs) Red River Peak

Existing Conditions Model (ECMs) Tributary Peak

Post-Project Conditions Model (RCM) Floodway Runs

Post-Project Conditions Model (RCM) Red River Peak

Post-Project Conditions Model (RCM) Tributary Peak

Cass County

Clay County

Richland County

Wilkin County

Supplemental Information


Appendix N – FM Diversion Mitigation Plan


Appendix O – Floodplain Mapping

LiDAR QA_QC Reports


Work Maps – Cass County

Clay County

Richland County

Wilkin County

CLOMR Final Documents


FDRA Floodway

100yr_WP_FP Floodplain and



Staging Area Floodway – Staging Area

Trib Peak EX

Trib Peak WP


Supplemental Documentation



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