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Meet Forest Steward Nicole at the SW corner of 28th Avenue NE and NE 113th St.

Thornton Creek Alliance (TCA) is a grassroots, nonprofit organization dedicated to preserving and restoring an ecological balance in the Thornton Creek watershed, a drainage of approximately 11.6 square miles in northeast Seattle and Shoreline.

Contact Info

Thornton Creek Alliance
P.O. Box 25690
Seattle, WA 98165-1190

thorntoncreekalliance@gmail.com