Seattle and the surrounding area have a high risk for flooding due to high volumes of rainfall and lengthy rainy seasons. While residents of Seattle are aware of the consistent overcast weather, they may not be as informed about the high flood risk their properties face. According to firststreet.org, a storm that results in severe flooding, occurring today, could affect over 6,000 properties in Seattle, excluding surrounding regions like Bellevue, Kirkland, Bainbridge Island, and Shoreline.
Seattle and the surrounding areas face three distinct flooding hazards:
- Riverine flooding
- Coastal flooding
- Urban flooding
Let’s dive into a few key factors in understanding flood risk in Western Washington, what homeowners can do to mitigate it, and what to do when you have experienced flooding. Poseidon Restoration is a local expert in home flooding and water restoration repair in Western Washington.
Why Flooding is a Common Concern in Seattle, WA
With over 200 miles of waterfront, flooding is a natural concern in Seattle. The area, rich in rivers and lakes, is not immune to the threats of flooding, especially because of connections to other water systems elsewhere. Additionally, flooding brings more with it than temporary water. Flooding can cut off access to utilities, emergency services, and transportation, and may impact the overall economic well-being of an area. For example, flooding around the Cedar River can decrease water quality and have an impact on the clean water supply elsewhere.
Seattle's Rainfall and Urban Drainage Challenges
Urban flooding happens when high volumes of rainwater overwhelm a city’s drainage system. Low-lying areas like Madison Valley and Midvale pose a particularly high flood risk. Because of large amounts of concrete in the urban city center, standing water has no other exit route except for the city’s drainage and sewage systems. Although they are well equipped to handle the wet city, there is a risk if the area experiences an inordinate amount of rain over a short period of time.
Seasonal Flood Risks in the Pacific Northwest
Seasonal flood risks often come with winter storms and high King tides. The western side of Seattle is at risk of coastal flooding. The South Park neighborhood is also at risk from these King Tide events. Much of Seattle’s coastline consists of bluffs with homes built at the top. Coastal storms can erode the toe of these sea cliffs and are a factor in landslides. In parts of West Seattle, Magnolia and along Lake Washington, homes are built along the shore. These properties are exposed to coastal storm damage. This risk is amplified if sea-level rise affects Puget Sound.
Common Types of Flood Damage in Homes
Structural and Foundation Issues
Floodwaters can disrupt and erode the soil around a structure’s foundation, weakening it and making it susceptible to collapse or decay. Cracks in a home’s foundation can be a gateway for groundwater to enter the foundation, walls, and floor, causing widespread damage.
Mold and Mildew Growth
Mold growth can start within 24 to 48 hours of exposure to water and can lead to respiratory problems, allergies and other lasting health issues. Additionally, mold can deteriorate home building materials like wood, drywall and insulation, weakening your home’s infrastructure. Immediate mold mitigate is essential after a flooding event.
Electrical and HVAC System Damage
Flood damage can also lead to appliance malfunctions and electrical hazards as well as contamination risks. Hose or seal leaks in your home appliances can cause flooding throughout the home.
Call A Trusted Local Restoration Team
Poseidon Restoration stands as the top flood damage restoration provider in Seattle, Washington. We provide full-service emergency flood mitigation and repair services for residents of Western Washington. Contact us today for expert repair services and top-notch customer service. We are available 24/7 for your convenience.
