Green Island

Why It’s Important

Green Island, the McKenzie River Trust’s largest protected property, presents one of the best remaining opportunities within the Willamette Valley for preserving and restoring a dynamic and ecologically diverse river system. This area is a critical area for protection and restoration within the lower McKenzie Watershed.

Located at the confluence of the McKenzie and the Willamette Rivers, Green Island contains some of the least altered fish and wildlife habitat in the Willamette Valley and provides essential habitat for numerous species. At more than 1,000 acres, Green Island offers an opportunity to make an impact on a landscape level.


Our vision for Green Island is to restore a robust ecosystem comprised of a rich mosaic of historic habitat types. Cooperative partnerships dedicated to innovative, flexible and adaptive management carry this vision to success.


McKenzie River Trust purchased Green Island in 2003 from the Green family, who owned and farmed the land for over 70 years. They wanted to see it protected and restored for the benefit of wildlife and the communities of the southern Willamette Valley.  We’re grateful for the partners that helped fund this project:

  • The Oregon Watershed Enhancement Board (OWEB)
  • North American Wetlands Conservation Act (NAWCA)
  • Eugene Water and Electric Board (EWEB)

The Bonneville Power Administration (BPA) holds a conservation easement on the property, which insures that Green Island is managed in a way that protects natural resources, maintains or enhances air or water quality, and preserves its underlying archaeological or cultural resources in perpetuity. In addition, the State of Oregon, by and through OWEB, is a third party beneficiary to this easement.

The United States Fish and Wildlife Service’s Partners Program and Oregon Department of Fish and Wildlife’s Willamette Wildlife Mitigation Program as well as numerous other partnerships support these conservation activities.


Restoring the floodplain forest is a key element to enhancing the habitat on the property for native wildlife. Since 2006, McKenzie River Trust converted more than 245 acres of Green Island from agriculture fields to floodplain forest or riparian habitat. To date over 600,000 native trees and shrubs have been planted on the property, and many more are yet to come. These trees will grow to become a gallery forest and provide refuge for birds, bugs, frogs, beavers, and all the creatures that visit and live on this land.

We are also enhancing natural river flow processes on Green Island, including:

  • Flooding,
  • Channel migration,
  • Groundwater interaction
  • Formation of backwater areas

Our team removed more than 5,600 feet of levees from the Island, permitting high waters to flow through swales and portions of the property. This connected the area channels to the river flow for the first time in 35 years. We’re planning to remove additional levees so that backwater channels on the property will reconnect. Bringing back the river’s flow to these channels will provide critical habitat for juvenile spring Chinook and Oregon Chub.

Animals on the property

Green Island is home to numerous fish and wildlife species. We’ve recorded several federally- and state-listed threatened and endangered species such as:

  • Spring Chinook salmon,
  • Oregon chub,
  • Western pond turtle
  • Red-legged frog

Volunteers, scientists, and staff identified 156 types of birds on the property including:

  • Western meadowlark,
  • Pileated woodpecker, and
  • Black phoebe.
  • Great blue heron
  • Osprey

Beavers, salamander, and other iconic Oregon species can also be found on the property.


The Environmental Protection Agency, Oregon State University and the Oregon Department of Fish and Wildlife are actively using the property as a field site.  Findings from their work help us understand the intricate relationship between surface and ground water, floodplain function, and water quality.


Many volunteers and partners have helped to plant thousands of trees and shrubs on Green Island. They’re also working to control invasive weeds like Scot’s broom, Himalayan blackberry, Japanese knotweed and tansy ragwort. This work continues today, and you can help! To get involved, visit our volunteers page.

The McKenzie River Trust offers regular tours of Green Island led by volunteer experts. Recent tours have focused on birds, native plants, and dragonflies and damselflies. Sign up for our contact list to be the first to hear about all our events and tours.