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Tukwila: Hamm Creek

This is a chance for people to reclaim the river by weeding plants, planting native species, mulching the planting areas, and picking up debris and trash from the riverfront sites. The Duwamish River is our hometown river, flowing through heavily developed and industrialized areas of South Seattle and King County into Elliott Bay. The river’s final six miles, which were turned into a straightened channel in the first half of last century, have been polluted by years of industry and overburdened storm-sewer drains and are a Federal Superfund Cleanup site. Restoring the health of urban rivers such as the Duwamish is essential to restoring the health of Puget Sound.

The Basics

Registration is required. EarthCorps supplies gloves, tools, water and snack bars. We will teach you everything you need to know! No experience necessary, just come ready to learn something new! Be sure to sign in at registration when you arrive.

This video may give you a better idea of what to expect.

For your safety and comfort please bring:

  • Clothing that can get dirty (because it will!)
  • Clothing that will protect your legs against prickly plants (no shorts, please)
  • Sturdy shoes that can handle some mud (closed toed shoes are required such as work boots, hiking boots, rubber boots, etc. NO sandals, flats, or heels)
  • Rain gear and warm layers -OR- sun protection (check the weather!)
  • Sack lunch and snacks (to refuel)
  • Full water bottle (we will have a jug on-site for re-fills)
  • Travel mug for tea/coffee
  • If you have a favorite pair of gloves, feel free to bring them (otherwise we're happy to provide a pair)

The event will happen rain or shine!

What will volunteers be doing at the event?

While the exact tasks can vary, our projects focus on improving the forests and parks in our local cities. Healthy and thriving forests are vital to our community because they absorb and filter rain water, produce clean oxygen, provide living spaces for wildlife, and create a place for people to connect with the outdoors.

In order to help create healthy forests and green spaces, the work can include, but is not limited to:

  • Removing weeds (like Ivy or Blackberry)
  • Maintaining areas where these weeds have been removed (weeding or spreading mulch)
  • Planting trees and shrubs during the rainy season (often ~Oct.-Feb.)


If you are coming as a group, the group leaders are expected to have an active role in our events. After registering your group, please get in touch with to make sure everything is in order. On the day of the event, make yourself known to the staff (in bright yellow vests) and arrive early in order to help guide your group members.

Youth Policy

Youth under the age of 14 must be accompanied by a parent, guardian, or responsible adult. All volunteers between the ages of 14 and 17 that are not with a parent or guardian must print and bring a filled out Youth Waiver the day of the event.

Youth and school groups are welcome to attend; leaders should contact the Volunteer Team to take care of all necessary preparations.


View Larger Map From the North: Take Michigan/Corson Ave exit off I-5, and go straight onto Corson, through the intersection of Michigan. Keep going on Corson, until it ends at E. Marginal Way. Turn Left and head south on E. Marginal Way.

10000 W Marginal Pl S

Seattle, WA 98168

Sign UpSaturday, July 20th: 10:00 am to 1:00 pm
Number of volunteer positions available: 21
Sign UpSaturday, August 17th: 10:00 am to 1:00 pm
Number of volunteer positions available: 23
Sign UpSaturday, November 2nd: 10:00 am to 1:00 pm
Number of volunteer positions available: 25