Flood / FEMA

Our highly skilled team at Jepson & Associates realizes the importance of precise flood surveying in protecting property investments and promoting public safety. Our service area extends across northwest Washington state, including Whatcom, Skagit, Snohomish, Island, and San Juan counties.


Flood Risk Assessment

We carefully assess your property’s flood risk to help you understand potential flooding impacts and prepare strategies to manage those risks. This crucial information guides insurance, land development, and emergency planning.

Flood Zone Identification (SFHA)

We accurately map your property's flood zone, ensuring you have the correct data for flood insurance and compliance with regulations.

Elevation Certificates

Elevation certificates are pivotal in determining flood insurance premiums and conformance to local floodplain regulations. Our team will guide you through the process, ensuring all documentation is accurate and thorough.

Site Analysis

We look at your property's unique characteristics and flood susceptibility to help guide your development decisions and mitigation methods.

Flood Hazard Mapping

We generate up-to-date and accurate maps to aid you with land use planning, insurance requirements, and environmental analysis.

Flood Hazard Development Review Forms

Our team can help you build your dream house, guiding you through the county permitting processes before, during and after construction with Pre-Construction Surveys, Stem Wall Certifications and Elevation Certificates.

Flood Zone Delineation

We delineate floodplains accurately, mapping the borders of areas prone to flooding and ensuring compliance with local, state, and federal regulations.

FEMA Compliance

We help you through the intricate FEMA processes, ensuring all floodplain management responsibilities are met, and correct data is provided for flood insurance purposes.

Letters of Map Change

Has your property or development project inaccurately been classified as being in a flood zone? With boots on the ground mapping we can assist by requesting letters of map change from FEMA, including LOMAs (Letter of Map Amendment), LOMRs (Letter of Map Revision), and conditional letters (CLOMA, CLOMR) for proposed projects.


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Glossary of Flood & FEMA Survey Terms

  • The process of marking or outlining a specific boundary or area, such as the limits of a floodplain or wetland.

  • Federal Emergency Management Agency - A U.S. government agency responsible for coordinating and supporting the nation's emergency preparedness, response, recovery, and mitigation efforts, including managing the National Flood Insurance Program.

  • A potential threat or danger posed by flooding events to a specific area or property.

  • The probability or chance of a flooding event occurring within a specific area or on a particular property based on factors like geography, historical data, and environmental conditions.

  • A designated area on FEMA's mapping system that indicates the level of flood risk. Each zone corresponds to a specific set of flood conditions and regulatory requirements.

  • A flat or low-lying area adjacent to a river, stream, or waterbody subject to periodic flooding.

  • Letter of Map Amendment - An official amendment, by letter, to a FEMA Flood Insurance Rate Map. A LOMA establishes a property's location in relation to the Special Flood Hazard Area (SFHA) and can remove a property or structure from a high-risk flood zone.

  • Letter of Map Revision - An official revision, by letter, to a FEMA Flood Insurance Rate Map. A LOMR reflects changes to flood hazards or boundaries based on new information or data.

  • A flooding event that has a 1% chance of happening in any given year. This does not imply it will only happen once every 100 years; in fact over the course of a 30 year mortgage there is a 26% chance of experiencing a “100 year” flood.

  • The elevation of surface water resulting from a flood that has a 1% chance of equaling or exceeding that level in any given year.

  • An additional amount of height above the Base Flood Elevation used as a factor of safety in determining the level at which a structure's lowest floor must be elevated or floodproofed to be in accordance with state or community floodplain management regulations.

  • A vertical datum is a surface of zero elevation to which heights of various points are referenced.

Surveying shoreline boundary in Whatcom county

At Jepson & Associates, our purpose is to offer exceptional flood surveying and management solutions that equip our clients to make informed decisions and protect their investments. Our commitment to providing unparalleled service, maintaining the highest standards of accuracy and reliability, and promoting public safety throughout the northwest Washington state region remains unwavering.