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Geomorphic Mapping for the lower Middle Fork Willamette River, Oregon in 2018 and 2020


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Keith, M.K., and Bervid, H.D., 2022, Geomorphic Mapping for the lower Middle Fork Willamette River, Oregon in 2018 and 2020: U.S. Geological Survey data release,


Since 2008, large-scale restoration programs have been implemented along the Willamette River, Oregon, to address historical losses of floodplain habitats for native fish. For much of the Willamette River floodplain, direct enhancement of floodplain habitats through restoration activities is needed because the underlying hydrologic, geomorphic, and vegetation processes that historically created and sustained complex floodplain habitats have been fundamentally altered by dam construction, bank protection, large wood removal, land conversion, and other influences (for example, Hulse and others, 2002; Wallick and others, 2013). For gravel-bed rivers like the Willamette River, planimetric changes (defined here as geomorphic changes related [...]


Originator :
Mackenzie K Keith, Heather D Bervid
Metadata Contact :
Mackenzie K Keith
Distributor :
U.S. Geological Survey - ScienceBase
SDC Data Owner :
Oregon Water Science Center
USGS Mission Area :
Water Resources

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Digital channel maps were produced from aerial photographs collected in 2018 and 2020 to depict channel and floodplain conditions, including landforms, water features and landform cover along the active channel of the Middle Fork Willamette River. These data have been created to support an assessment of geomorphic responses to floodplain restoration activities that occurred in 2014 and 2017 along the lower 6.8 kilometers of the Middle Fork Willamette River near the Willamette Confluence Preserve (river miles 187.5 to 191.5 on USGS topographic maps). This geomorphic mapping provides an inventory of existing landforms from which to evaluate spatial and temporal changes that may result from multiple factors, including planimetric channel changes that may have resulted from restoration activities. The detailed mapping will also provide a basis for evaluating geomorphic context and temporal and spatial patterns of landforms within the lower 6.8 km of the Middle Fork Willamette River. These datasets complement and extend the period of previous mapping of the lower Middle Fork Willamette River spanning 1936-2016 (Keith and Gordon, 2019).

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DOI doi:10.5066/P9RL2TTW

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