Technical Report
 

History, Current Conditions, and Wetland Restoration at Killin Wetlands Natural Area, Washington County, Oregon

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https://ir.library.oregonstate.edu/concern/technical_reports/nz806405n

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  • In September 2014, the Metro Natural Area Program engaged The Wetland Conservancy to develop a scientific assessment of Metro’s 590-acre Killin Wetlands Natural Area. Metro acquired the lands comprising the KWNA between 2000 and 2012 with funds from two voter approved open space bond measures. Since 2000, Metro has sought to advance natural area restoration at the site, focusing on the suppression of non-native pasture weeds and planting of native trees and shrubs in higher parts of the floodplain and its edges. Most uplands in Metro ownership have been maintained in agriculture through leased partnerships with local farmers. Metro and its partners have observed the effects of persistent flooding at the site, which began prior to Metro’s acquisition of the property. Most notable has been the decline of the once abundant Geyer willow stand, a prominent and valued feature of the site. In February 2014, Metro convened several key scientists familiar with the wetland, and its underlying Labish soil, to discuss what was known about the Killin Wetlands and possible next steps in advancing restoration there. That discussion focused on the subsidence of organic soils, caused by artificial drainage, and led to the recommendation that a review of regional peat soil wetlands would be an important step in developing an informed plan for preserving and restoring Killin Wetlands. This report presents that review.
  • Produced by The Wetlands Conservancy and Oregon Biodiversity Information Center, Institute for Natural Resources, Portland State University for Metro, August 2015.
  • Keywords: Killin Wetlands Natural Area, Geyer willow, Labish soil, Wetlands
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  • Christy, John A., “History, Current Condition, and Wetland Restoration at Killin Wetlands Natural Area, Washington County, Oregon”, INR Report, The Wetlands Conservancy and Oregon Biodiversity Information Center, Institute for Natural Resources, Portland State University, Portland, Oregon, August 2015. 59 pp.
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  • Portland Metro
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