OR · Region 10
LOMA and LOMR-F in Oregon
Oregon flood risk is driven by atmospheric river events on the Willamette and Columbia systems plus coastal surge on the Pacific Coast. Portland metro generates a steady LOMA workload.
LOMA in Oregon
LOMA files often involve homes on natural benches above mapped Willamette tributaries.
Read the national LOMA page →LOMR-F in Oregon
LOMR-F applies to newer developments built on engineered fill.
Read the national LOMR-F page →Where activity concentrates
Major metros
- • Portland
- • Salem
- • Eugene
- • Gresham
Common counties
- • Multnomah County
- • Washington County
- • Lane County
Licensing and documentation in Oregon
Elevation Certificates must be prepared by an Oregon-licensed Professional Land Surveyor or Professional Engineer.
Frequently asked questions about Oregon
Can a property in Oregon qualify for a FEMA LOMA?
Yes, many Oregon properties qualify when the structure or parcel sits on natural high ground above the Base Flood Elevation. LOMA files often involve homes on natural benches above mapped Willamette tributaries. A specialist review can confirm whether the property matches the LOMA pattern before you order new survey work.
When is a LOMR-F the right path in Oregon?
A LOMR-F applies when earthen fill created the elevation difference. LOMR-F applies to newer developments built on engineered fill. If fill was used, packaging the file as a LOMA usually creates delay.
Who can prepare an Elevation Certificate in Oregon?
Elevation Certificates must be prepared by an Oregon-licensed Professional Land Surveyor or Professional Engineer. FloodMapReview.com can review an existing Elevation Certificate or connect you with a qualified professional if new survey work is needed.
Which Oregon counties see the most LOMA and LOMR-F activity?
Activity is concentrated in Multnomah County, Washington County, Lane County, driven by atmospheric river flooding and coastal surge.
Does a LOMA in Oregon automatically remove flood insurance?
Not automatically. A LOMA can change the federal mandatory-purchase requirement, but Oregon lenders and insurance carriers still make underwriting decisions. A Oregon homeowner may still choose to keep voluntary coverage.
How long does a Oregon LOMA typically take?
Timing depends on document readiness and whether the case qualifies for the faster professional-submitted eLOMA route. Most Oregon files move faster when the Elevation Certificate and FEMA correspondence are gathered before submission.
Can FloodMapReview.com help with a LOMA anywhere in Oregon?
Yes. We review LOMA and LOMR-F files across all Oregon counties, including Portland, Salem, Eugene and surrounding areas. Call (281) 870-4492 to talk through an urgent file.
What documents should Oregon homeowners gather first?
Start with the property address, current flood zone or lender determination, any existing Elevation Certificate or survey, prior FEMA correspondence, and a lender or insurance notice if one triggered the review. Upload what you have and a specialist will identify the next step.
Reviewed by
FloodMapReview Engineering
Licensed P.E. and CFM team, FloodMapReview.com
FloodMapReview Engineering is a team of licensed Professional Engineers and Certified Floodplain Managers who have reviewed hundreds of LOMA, LOMR-F, eLOMA, and Online LOMC files across the United States. The team specializes in helping homeowners, buyers, lenders, and surveyors navigate the FEMA flood map amendment process. FloodMapReview engineers personally review every case for eligibility, ensure Elevation Certificates and supporting documents meet FEMA standards, and guide clients from initial assessment through final determination.
