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Cedar Mill News
Volume 3, Issue 6


June 2005

The Cedar Mill Wetland

By Marshall Johnson, Land StewardThe Wetlands Conservancy

On Saturday, June 25th, Rock Creek Watershed Partners and The Wetland Conservancy will sponsor a restoration party at the Cedar Mill Wetland. Community residents are encouraged to join the effort to eliminate invasive plants and put in some new native species. To volunteer, contact Amanda Wilson, (503) 614-7630 or wilson_amanda_e@yahoo.com

The Cedar Mill Wetland is a sixteen-acre property located right in the middle of Cedar Mill, just southeast of the Teufel property spanning both sides of Barnes Road. Owned by The Wetland Conservancy, The Wetland has diverse topography and vegetation types. It includes year-round ponds, forested upland, scrub-shrub areas, and wet meadow communities. A wide variety of wildlife uses the wetland habitat, such as beaver and deer and many species of birds, reptiles, and amphibians.

Cedar Mill is a restored wetland that was excavated and planted with native vegetation approximately ten years ago. If you were around then, you would have wondered at all those white sticks poking up through the water. Invisible now, they were the beginnings of the restoration project. Historically, this property was a wetland, with (Beaverton’s) Johnson Creek meandering through it. During the past century, the property was converted to horse pasture, with Johnson Creek channelized along the south side of the property. As part of mitigation projects by multiple organizations, the property was later converted back into a wetland. The Wetlands Conservancy acquired the property several years ago and currently holds it for conservation purposes.

On the east side of Barnes Road, the wetland is made up of a series of interconnected ponds with Johnson Creek flowing along the south side. Originally, a weir was constructed to divert a portion of Johnson Creek’s flow though the wetland. Beaver have since constructed a large dam upstream of the weir, which serves a similar function. After flowing through the linked ponds, the diverted waters reconnect to Johnson Creek just before the culvert beneath Barnes Road. Johnson Creek continues through the culvert and enters the western portion of the wetland. On the west side of Barnes Road, Johnson Creek flows along the south of the property until it enters a culvert to pass beneath I-26.

Because TWC is a small not-for-profit land conservation agency, we rely on volunteer community groups to help with preservation and restoration of Cedar Mill Wetland. Controlling the spread of non-native invasive weeds is part of the overall site management and restoration program. The focus is to reduce the presence of invasive weeds, while enhancing native plant communities in order to help preserve water quality, wildlife habitat, biodiversity and aesthetics.

The mission of The Wetlands Conservancy (TWC) is to preserve, protect and restore the physical and ecological values of wetlands, other aquatic systems and related uplands through education, research, acquisition and promotion of private and public stewardship. For more information about TWC, please visit our website at www.wetlandsconservancy.org/.



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Publisher/Editor:Virginia Bruce
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