Wetlands cover only 2% of Washington state, yet they have an out-sized impact in their importance both to us and the environment. Much of Lake Washington’s wetlands have been lost due to urbanization and a historical lack of knowledge of wetlands’ importance. Thankfully though, Mercer Slough has been preserved to allow us to experience this unique ecosystem first-hand and support a wide-diversity of wildlife.

It serves as a natural and important part of the city of Bellevue’s drainage system and filters 10 billion gallons of water per year which flow through these wetlands into Lake Washington. Additionally, it provides a habitat to over 113 species of birds, 25 species of mammals, and 19 species of fish. Many migratory species call Mercer Slough home temporarily as well. Fifteen species of migratory birds stop here as they make their way along the Pacific Flyway and Chinook, Coho, and Sockeye salmon all swim through its waterways to spawn upstream.

In addition to its tranquil beauty and trails, perfect for walking, biking, or watching wildlife, the area offers other interesting amenities as well. On the east side of the park is an environmental education center which has a visitor center, provides ranger programs, and serves as a model for sustainable building practices.On the west side of the park is a u-pick blueberry farm, open to the public during blueberry season (typically mid-July to mid-September). It was established in the 1940s and is operated by the city to preserve Bellevue’s agricultural heritage, which was tragically devastated by the internment of Japanese Americans during WWII. Next-door is a produce stand which sells farm-fresh, seasonal produce, flowers, and agricultural products as well as pre-picked and frozen blueberries from the blueberry farm.