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Flood Development and Protection Information
Flood Damage Prevention - Floodproofing
Several of Jefferson County's efforts to minimize flood risk depend on your cooperation and assistance.
Homeowners' insurance policies do not cover damage from floods. However, because Jefferson County participates in the National Flood Insurance Program (NFIP), you can purchase a separate flood insurance policy.
Flood Risk on Your Property
By entering your address in the appropriate fields on the official National Flood Insurance Program website, you can immediately learn about the predicted risk of flooding at your location.
Flood Warning System in Jefferson County
Jefferson County obtains flood warning information from the National Weather Service 24 hours a day, 7 days a week by JeffCom (9-1-1 Communications). Flood warnings are disseminated via radio (710AM), and other communication methods.
Find additional resources from our local, state, and federal partners.
Natural & Beneficial Functions of Floodplains
Floodplain lands and adjacent waters combine to form a complex, dynamic physical and biological system found nowhere else. When portions of floodplains are preserved in (or restored to) their natural state, they provide many benefits to both human and natural systems.
Safety During Flooding
Find safety tips for when you find yourself in a flood.
Sources of Flooding in Jefferson County
Jefferson County lies between the Pacific Ocean and the Puget Sound, and has an extensive river stream system which drains water from the Olympic Mountains.