Elevation Certificates in Yakima County, WA
An elevation certificate documents the elevation of a structure relative to the Base Flood Elevation (BFE) assigned by FEMA for that flood zone. It is the primary tool used by flood insurance companies to calculate accurate premiums, by lenders to confirm flood insurance compliance, and by floodplain administrators to verify that construction meets local floodplain development standards. In Yakima County, the Yakima River and its tributaries create significant flood risk that affects properties from the urban core in Yakima city through the agricultural valley communities of Wapato, Sunnyside, and Grandview.
Yakima County's flood picture is shaped primarily by the Yakima River, which flows south through the county from the Cascades foothills before turning east toward the Tri-Cities. The river is subject to both seasonal snowmelt flooding and occasional major flood events, and FEMA maps reflect substantial Special Flood Hazard Area coverage along its length.
Yakima County Flood Zones
Yakima River Through Yakima City
The Yakima River runs through and alongside Yakima city, creating the most densely populated stretch of mapped flood zone in the county. Neighborhoods near the river on the city's east and west sides, areas near Fruitvale Boulevard, and properties close to the river upstream toward Selah are among those with Special Flood Hazard Area designations. Property owners in these areas encounter flood insurance requirements regularly when buying, selling, or refinancing.
Naches River Confluence
The Naches River joins the Yakima River north of Yakima city. The confluence area and the Naches River corridor west of Yakima carry their own flood zone designations. Properties near the Naches Highway corridor and the Selah area north of the Yakima River may fall within flood zones tied to either the Naches or the Yakima, and in some cases both.
Selah Creek
Selah Creek drains the hillsides east of Selah and flows into the Yakima River near the city. Low-lying areas along Selah Creek, particularly near its confluence with the Yakima, can carry flood zone designations separate from the main river channel. Property owners in Selah near the creek should check FEMA maps carefully.
Wapato, Sunnyside, and Agricultural South Valley
South of Yakima, the valley widens and large areas of low-lying agricultural land border the Yakima River and its irrigation canals. The Wapato and Sunnyside areas have extensive mapped flood zones that affect both residential and agricultural properties. Flood insurance requirements on agricultural land in this corridor are common, particularly for properties with federally backed farm loans. Grandview and Mabton, near the Benton County border, also have areas within the Yakima River flood zone.
When You Need an Elevation Certificate
- Purchasing a flood zone property: Federal law requires flood insurance on any federally backed mortgage where the property is in a Special Flood Hazard Area. The insurer uses an elevation certificate to set the premium.
- Building or making substantial improvements in a flood zone: Yakima County floodplain development regulations require documentation that new construction meets elevation standards. An elevation certificate provides that documentation.
- Applying for a LOMA: If your structure's lowest floor is above the Base Flood Elevation, an elevation certificate is the required starting document to petition FEMA for removal from the flood zone map via a Letter of Map Amendment.
- Reducing an inflated flood insurance premium: Pre-FIRM buildings rated at default premiums often pay more than necessary. An elevation certificate can allow the insurer to rate the policy on actual elevation data, which frequently reduces the annual premium.
- Agricultural property with a federal loan: Farm properties in the south Yakima Valley with USDA or SBA financing are subject to mandatory flood insurance requirements when in mapped flood zones.
The Process
Hire a Washington-licensed Professional Land Surveyor to prepare the certificate. The PLS visits the property, measures the elevation of the lowest floor and required flood reference marks using GPS equipment tied to NAVD 88 datum, and completes FEMA Form FF-206-FY-22-152. The completed, signed, and sealed certificate is provided to you, your lender, and your insurer.
Before ordering, check whether a prior elevation certificate exists for your property. Properties in established flood-prone subdivisions in Yakima or Sunnyside may have certificates on file from prior real estate transactions. A valid prior certificate, completed after the most recent FEMA map revision for your area, may be accepted without the cost of a new one.
Cost in Yakima County
Most elevation certificates in Yakima County cost $300 to $550, which reflects the county's lower labor market compared to western Washington. Agricultural parcels with large footprints or access challenges may run higher. Collect at least two written quotes and confirm the scope covers site visit, elevation measurements, form completion, and the signed sealed certificate.
Find a Licensed Surveyor for Your Elevation Certificate
Our directory connects you with Washington PLS-licensed surveyors serving Yakima County and the surrounding valley. Search Yakima County surveyors to find firms that handle elevation certificates in Yakima, Selah, Wapato, Sunnyside, and Grandview.