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Original aerial photographs of Fall Creek Lake, Oregon, acquired during annual drawdown to streambed November 8, 2016


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Keith, M.K., and Mangano, J.F., 2020, Structure-from-motion datasets of Fall Creek Lake, Oregon, acquired during annual drawdown to streambed November 2016: U.S. Geological Survey data release,


The Middle Fork Willamette River basin encompasses 3,548 square kilometers of western Oregon and drains to the mainstem Willamette River. Fall Creek basin encompasses 653 square kilometers and drains to the Middle Fork Willamette River. In cooperation with the U.S. Army Corps of Engineers, the U.S. Geological Survey evaluated geomorphic responses of downstream river corridors to annual drawdowns to streambed at Fall Creek Lake. This study of geomorphic change is focused on the major alluvial channel segments downstream of the U.S. Army Corps of Engineers’ dams on Fall Creek and the Middle Fork Willamette River, as well as the 736 hectare Fall Creek Lake. Reservoir erosion during streambed drawdown results in sediment delivery to downstream [...]


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The raw photographs, point clouds, DEMs, and orthophotographs (herein collectively referred to as SfM datasets) covering Fall Creek Lake support detailed mapping of reservoir deposits and quantitative reservoir change analyses related to the streambed drawdown during water year 2017 (WY2017). The detailed mapping was primarily based on the November 10, 2016, SfM datasets and provide a basis for evaluating geomorphic context of eroded or deposited sediment relative to other (November 8 and 9) SfM datasets collected in WY2017, lidar of the reservoir collected in 2012, as well as other elevation datasets collected in the future. These datasets also provide basis for characterizing future geomorphic and topographic changes in Fall Creek Lake.

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