Ceescope hypack2/12/2023 The final dataset provides position data in three dimensions with units of meters supplied in a “XYZ” file. Position and elevation data were collected using Real-Time Kinematic (RTK) global positioning system technology following the single-base RTK approach outlined by Rydlund and Densmore (2012). Depth data were collected using a CEESCOPE (CEE Hydrosystems, 2015a) single-beam echosounder mounted to a canoe. The survey extended from 300 meters (m) upstream to 500 m downstream of the I-26 bridge across the French Broad River located south of Asheville, North Carolina. Geological Survey (USGS) in cooperation with the NCDOT conducted a single-beam bathymetric survey of one of the three focus areas in June of 2019, approximately seven months before construction was to begin. The NCDOT identified channel and streambank morphology as a potential indicator they were interested in monitoring at three focus areas to track impacts from construction activities. The French Broad River flows adjacent to and under I-26 in the project area, located in Buncombe County of North Carolina. The North Carolina Department of Transportation (NCDOT) began work on a highway widening project on Interstate-26 (I-26) in January 2020.
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