Elevation Certificates in Healdsburg, CA

We prepare FEMA elevation certificates and letter of map amendment data for buildings in Healdsburg, Sonoma County, along Foss Creek and the Russian River.

Elevation certificates from $1,000 · (510) 543-2220

Elevation Certificates in Healdsburg: Local Conditions

Most people assume the Russian River is Healdsburg's flood problem. The City says otherwise: the river and Foss Creek are the two main flooding hazards, and Foss Creek causes most of the flooding in town. An exposure analysis for the City's hazard mitigation plan found about 8 percent of residential structures, about 9 percent of the population, and 20 percent of critical facilities inside a 1 percent or 0.2 percent annual chance flood zone. The City adds that flooding happens on a semi-regular basis both inside the FEMA floodplains and in other localized areas.

Healdsburg's map history explains why older flood determinations can be wrong. FEMA completed a restudy of the Russian River near Healdsburg and adopted new floodplain maps in September 2006. In 2008 the City gave notice of a letter of map revision to narrow the Foss Creek floodway between US 101 and Grove Street, by as much as 1,400 feet near West Grant Street. The current FEMA panels for the city took effect August 19, 2010. Upstream, Warm Springs Dam, built by the Army Corps in 1982 about 14 miles northwest of town, holds Lake Sonoma and a 130,000 acre-foot flood pool on Dry Creek. If your lender's determination predates those changes, check the effective panel at msc.fema.gov before assuming anything.

For a Healdsburg flood elevation certificate we tie to a benchmark in NAVD88, measure the lowest and highest adjacent grades, lowest floor, garage and crawlspace levels, flood openings, and the heights of furnaces, water heaters, and condensers, and photograph every side of the building before signing the FEMA form. If your building or lot is at or above the Base Flood Elevation, we can prepare letter of map amendment data and file it through eLOMA when eligible. See our FEMA elevation certificate service, the Guerneville and Santa Rosa pages, or surveying in Healdsburg.

Full service details, process, and deliverables: FEMA Elevation Certificates & LOMA · All surveying in Healdsburg: Healdsburg land surveying

What's Included

Signed and sealed by a California Professional Land Surveyor
Completed on FEMA Form FF-206-FY-22-152, with the required photographs
Elevations tied to a published benchmark on the flood map’s vertical datum
eLOMA submission as a licensed professional when the building qualifies
Construction-stage ECs for permits: construction drawings, building under construction, and finished construction
Sacramento region, Central Valley, Delta, and Bay Area

Our Process

Address & Flood Map Check

Send the address and the reason you need the certificate: lender letter, insurance quote, building permit, or a LOMA. We pull the effective FIRM panel, flood zone, and Base Flood Elevation before quoting, and tell you up front if a LOMA looks possible.

Benchmark Tie

We tie the site to a published benchmark on the vertical datum the flood map uses, with GNSS and a total station. Every elevation on the certificate is measured from that tie, not estimated from a contour map.

Building Measurement

We measure the top of the bottom floor, the next higher floor, the garage slab, the lowest and highest adjacent grade, the lowest machinery and equipment, and the flood openings, and take the photographs the form requires.

Signed EC, and the LOMA if It Qualifies

You receive the completed, signed Elevation Certificate as a PDF. If the lowest adjacent grade is at or above the Base Flood Elevation, we prepare the LOMA request and submit it to FEMA, through eLOMA when the building meets its criteria.

Elevation Certificates in Healdsburg: FAQ

The City of Healdsburg says Foss Creek causes most of the flooding in town, while the Russian River governs the low ground near the river. Which one matters for you depends on where the building is. The elevation certificate compares your building to whichever flood elevation the effective map shows at your location.

Possibly not. Healdsburg's current FEMA panels became effective August 19, 2010, after a Russian River restudy and a Foss Creek floodway revision. Ask your lender to confirm the determination against the current panel. If the building is still shown in the zone, a certificate gives you measured numbers to work with.

Yes. The FEMA elevation certificate applies to residential and non-residential buildings in a mapped flood zone, inside or outside city limits. A non-residential building that relies on dry floodproofing instead of elevation also uses FEMA's separate floodproofing certificate, so tell us up front how the building was designed.

Need Elevation Certificates in Healdsburg?

Elevation certificates start at $1,000. Call (510) 543-2220 with the Healdsburg address and we'll check the flood map and give you a fixed price.

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Private licensed surveyor, not affiliated with FEMA • Homeowners welcome • Response within 24 hours

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