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An adult emerald ash borer feeds on an ash tree leaf.

The Emerald Ash Borer Has Arrived in Oregon

For twenty years, a pretty little insect has been traveling across the nation and it has finally arrived in Oregon, as specialists knew it eventually […]

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Join Tualatin SWCD’s Board of Directors – Elections in November 2022

Do you love your community and want to help keep it healthy and thriving? Do you have ideas on how public funding could be used […]

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Summer Harvest Season in Washington County

Summer is a busy time for agricultural communities. As crops ripen over the summer and into the fall, farm workers are putting in long, hard, […]

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Illustration of binoculars with knotweed as lenses

Keep a Watch Out for Knotweed

Knotweed is harmful to urban and natural areas and is difficult to control. If you have knotweed on your property, we will treat it for free.

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Screenshot of Watershed Navigator homepage

Meet Your Watershed Navigator

The Watershed Navigator is a resource for people who live, work, and play in Oregon’s Tualatin River watershed. It includes tools for your home, yard and community and information about where to access parks, trails and the river.

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Masters of Disguise: Mimicry in Nature

They say imitation is a form of flattery but, for some, it’s a means of survival. All throughout the animal and plant world, we find […]

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