Riparian Habitat Improvement
Mechanical Removal of Non-natives
A healthy riparian habitat with diverse native plant species provide better wildlife habitat and improves stream water quality . Intact riparian corridors improve water quality by reducing sediment delivery by stabilizing the banks, providing shade that results in lower stream temperatures, and leaves that provide food for macro-invertebrates.
Gales Creek Work Day
Some riparian areas in the Tualatin Watershed have been overrun with invasive plants others simply have no vegeta-tion due to continual bank sloughing. The most common non-native invasive plants are Himalayan blackberry, Eng-lish ivy, and Japanese knotweed.
Common methods of reducing non-native invasive species are mechanical cutting followed by native plantings.
Two culverts and road fill were removed to allow fish passage to upstream habitat. In addition 208 logs were placed in the streams by helicopter to produce additional fish habitat. Native plants were planted on both sides of the stream and on a upland site following the in steam work. Continue reading
This project along Gales Creek decommissioned a farm road, added large woody debris to improve fish habitat, planted native plants in the newly created riparian and flood plain areas. It also created several depressions for amphibians along the stream corridor. Continue reading
OWEB Small Grant Elmwood Neighborhood Restoration Project December 2010 to December 2011 Improved Riparian Process and Function This neighborhood project improved riparian and upland areas along a tributary of Ash Creek in Metzger. Contract crews re-moved invasive plants and … Continue reading