Thurs 10/30/2025, Mercer Slough

10 a.m. – 12:45 p.m. with van ride from Seattle's Jefferson Community Center, or meet at Lake Sammamish at 10:20 a.m.

The slough is Lake Washington’s largest remaining wetland, containing hundreds of plant species and an abundance of water resources. Weaving through boardwalks and soft-surface trails we will explore 2-3 miles of varying elevation. Note that it may be muddy if it has rained recently.